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JBL Synchros S700 Review | 93 Data compared

Avg. price in UK: ~£310
Avg. price in US: ~$350
Form factor: over-ear
Connectivity: wired
Battery life: N/A hours
Active noise cancellation (ANC): no

JBL Synchros S700 review. Compare 93 technical specifications and user reviews to see how it ranks among headphones and if it is worth buying.

6.1

Good

6.1

Good

6.3

Good

3.2
Gaming
Score components:
35.0%
0.0
Audio latency
25.0%
0.0
Low-latency game mode
20.0%
10
Can be used as a headset
12.0%
10
Noise-canceling microphone
8.0%
0.0
Battery life
0.8
Travel
Score components:
28.0%
1.0
Active noise cancellation (ANC)
24.0%
0.0
Battery life
18.0%
3.0
Weight
16.0%
0.0
Multipoint support
14.0%
0.0
Ambient sound mode
6.3
Calls
Score components:
28.0%
10
Noise-canceling microphone
24.0%
10
Can be used as a headset
18.0%
0.0
Multipoint support
16.0%
0.0
Battery life
14.0%
8.0
Companion app
3.1
Workout
Score components:
28.0%
3.0
Weight
24.0%
1.0
Water resistance
20.0%
4.0
IP rating
16.0%
0.0
Battery life
12.0%
10
Can be used as a headset

Best prices in UK

Best rankings

Verdict

The JBL Synchros S700 is a premium, flagship over-ear headphone featuring 50mm drivers and proprietary LiveStage™ DSP technology designed to simulate a live concert soundstage. Built from durable materials like die-cast aluminum and steel with soft leather ear cushions, it offers a frequency response of 10Hz to 22kHz, a sensitivity of 117 dB, and up to 28 hours of battery life for its powered processing. Main pros include its high-quality, sturdy construction, powerful PureBass performance, and the ability to operate in passive mode when the battery is drained. However, some users find the LiveStage processing can make certain tracks sound thin or unnatural, the proprietary 2.5mm-to-USB charging cable is inconvenient to replace, and the headband may feel heavy or cause pressure during extended listening sessions.

Technical Specifications of JBL Synchros S700

Overall score

6.1

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Popularity

What it is: An indicator based on the number of reviews received by the headphones.

When it matters: When you prefer headphones that have already been chosen and reviewed by many other users.

Sound

5.7

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Active noise cancellation (ANC)

What it is: Reduces background noise using active technology

When it matters: When blocking office, travel, or aircraft noise is a priority.

Importance: HIGH

Driver type

What it is: Type of speaker driver technology used

When it matters: When the underlying sound character and driver technology matter to you.

Importance: MEDIUM

dynamic

Driver size

What it is: Diameter of the speaker driver unit

When it matters: When you want extra hardware context behind how the headphones may handle bass weight, scale, or overall presentation.

Importance: MEDIUM

Number of drivers

What it is: Total number of speaker drivers per earcup

When it matters: When multi-driver designs are part of your buying criteria.

Importance: LOW

Lowest frequency

What it is: Lowest audio frequency the headphones can reproduce

When it matters: When deeper bass extension matters for your music or movie listening.

Importance: MEDIUM

Good value: <=10 Hz

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Calls & Controls

8.5

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Noise-canceling microphone

What it is: Built-in microphone reduces background noise during calls

When it matters: When you take calls in busy spaces and want your voice to stay clearer.

Importance: MEDIUM

Can be used as a headset

What it is: Shows whether the headphones can handle voice chat and calls in addition to normal audio playback.

When it matters: When one pair needs to cover music, calls, meetings, and gaming chat.

Importance: MEDIUM

Number of microphones

What it is: Total number of built-in microphones

When it matters: When call pickup quality and beamforming support matter to you.

Importance: LOW

Good value: >=2

Boom microphone

What it is: Includes detachable boom microphone for voice clarity

When it matters: When you need stronger voice clarity for gaming, streaming, or work calls.

Importance: LOW

Microphone SNR

What it is: Signal-to-noise ratio of the microphone

When it matters: When call clarity matters and you want your voice picked up more cleanly instead of buried in background hiss.

Importance: LOW

Good value: >80 dB

?

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Connectivity

6.2

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Connectivity

What it is: Available connection methods (wired, wireless, Bluetooth, etc.)

When it matters: When the headphones need to match how you listen across wired and wireless devices.

Importance: HIGH

Bluetooth version

What it is: Version of Bluetooth technology supported

When it matters: When wireless stability, efficiency, and feature support matter more than treating Bluetooth as a box-check spec.

Importance: MEDIUM

Good value: >=5.0

N/A

Maximum Bluetooth range

What it is: Maximum wireless operating distance from source device

When it matters: When you move around rooms and want fewer dropouts from your source device.

Importance: LOW

Good value: >=10 m

N/A

Audio latency

What it is: Delay between audio and video in wireless mode

When it matters: When you watch video or play games and need sound to stay in sync.

Importance: HIGH

Good value: <60 ms

N/A

Multipoint support

What it is: Supports simultaneous connections to multiple devices

When it matters: When you switch often between a phone and a laptop during the day.

Importance: MEDIUM

N/A

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Features

6.4

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Ambient sound mode

What it is: Allows external sounds to pass through for awareness

When it matters: When you need to stay aware of traffic, voices, or announcements.

Importance: MEDIUM

N/A

EQ support

What it is: Allows customization of sound profile via equalizer

When it matters: When the stock tuning is not enough and you want to shape bass, mids, or treble to match your taste.

Importance: MEDIUM

Companion app

What it is: Dedicated mobile app for customization and updates

When it matters: When software customization, updates, and extra controls matter.

Importance: MEDIUM

?

Adjustable ANC levels

What it is: Allows adjustment of noise cancellation intensity levels

When it matters: When you move between quiet rooms, offices, streets, and public transport and do not want one ANC setting for every situation.

Importance: LOW

Good value: >=4

N/A

Voice assistant support

What it is: Compatible with voice assistants like Siri, Alexa, or Google Assistant

When it matters: When hands-free control is part of your daily routine.

Importance: LOW

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Battery

7.3

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Battery life

What it is: Playback time on a single charge

When it matters: When you commute, travel, or work long shifts and do not want charging breaks to interrupt listening.

Importance: HIGH

Good value: >45 hours

N/A

Battery life with ANC

What it is: Playback time with active noise cancellation enabled

When it matters: When you plan to keep noise cancellation on for most of the day.

Importance: HIGH

Good value: >40 hours

N/A

Charging time

What it is: Time required for a full battery charge

When it matters: When you often need the headphones ready again after short breaks.

Importance: MEDIUM

Good value: <=2 hours

Quick charge

What it is: Provides quick playback time with short charging period

When it matters: When a short top-up needs to deliver useful playback before you leave.

Importance: MEDIUM

?

Battery capacity

What it is: Total energy storage of the internal battery

When it matters: When you are estimating how much battery headroom the design may have before relying only on the official runtime claim.

Importance: MEDIUM

Good value: >=720 mAh

?

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Design

5.9

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Brand name

What it is: The manufacturer or brand of the product.

When it matters: When you prefer a specific ecosystem, support network, or design philosophy.

Importance: MEDIUM

JBL

Form factor

What it is: Overall design type of the headphones (over-ear, on-ear, in-ear, etc.)

When it matters: When comfort, portability, and isolation depend on the overall headphone style.

Importance: HIGH

over-ear

Weight

What it is: Total weight of the headphones

When it matters: When long listening sessions make wearing comfort more important.

Importance: MEDIUM

Good value: <150 g

Acoustic design

What it is: Type of acoustic design (open-back, closed-back, semi-open)

When it matters: When you need the right balance of isolation, leakage, and soundstage.

Importance: HIGH

closed-back

Clamp force

What it is: Amount of clamping pressure applied to the head

When it matters: When comfort and fit security matter during long sessions.

Importance: MEDIUM

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JBL Synchros S700 vs the average headphone

Why is JBL Synchros S700 better than the average headphone?

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EQ customization
JBL Synchros S700 supports EQ customization, the average headphone does not. 23.3% of headphones support EQ.
What it is: Allows customization of sound profile via equalizer
When it matters: When the stock tuning is not enough and you want to shape bass, mids, or treble to match your taste.
Importance: MEDIUM
JBL Synchros S700 supports EQ customization, the average headphone does not. 23.3% of headphones support EQ.
Spatial audio support
JBL Synchros S700 supports spatial audio, the average headphone does not. 30.7% of headphones support spatial audio.
What it is: Supports immersive surround sound playback
When it matters: When movies, games, and immersive mixes are part of your listening.
Importance: MEDIUM
JBL Synchros S700 supports spatial audio, the average headphone does not. 30.7% of headphones support spatial audio.
10 mm larger driver size
JBL Synchros S700 uses a larger driver size than the average headphone (50 mm vs 40 mm). The average headphones use a driver size of 40 mm.
What it is: Diameter of the speaker driver unit
When it matters: When you want extra hardware context behind how the headphones may handle bass weight, scale, or overall presentation.
Importance: MEDIUM
JBL Synchros S700 uses a larger driver size than the average headphone (50 mm vs 40 mm). The average headphones use a driver size of 40 mm.50 mm vs 40 mm
15 dB/mW higher sensitivity
JBL Synchros S700 has a higher sensitivity than the average headphone (117 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
What it is: Sound pressure output level per unit of input power
When it matters: When you plan to use weaker sources like phones, handhelds, or entry-level dongles and still want enough volume.
Importance: MEDIUM
Good value: >=106 dB/mW
JBL Synchros S700 has a higher sensitivity than the average headphone (117 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.117 dB/mW vs 102 dB/mW
Clear call microphone
JBL Synchros S700 offers a clear call microphone, while the average headphone does not. 45.6% of headphones support noise-canceling microphones.
What it is: Built-in microphone reduces background noise during calls
When it matters: When you take calls in busy spaces and want your voice to stay clearer.
Importance: MEDIUM
JBL Synchros S700 offers a clear call microphone, while the average headphone does not. 45.6% of headphones support noise-canceling microphones.
Direct 3.5 mm plug
JBL Synchros S700 includes a direct 3.5 mm plug, the average headphone does not. 38.8% of headphones have a 3.5 mm male connector.
What it is: Shows whether the headphones end in a built-in 3.5 mm male plug instead of relying on a separate detachable cable.
When it matters: When direct wired compatibility with older devices or adapters matters.
Importance: MEDIUM
JBL Synchros S700 includes a direct 3.5 mm plug, the average headphone does not. 38.8% of headphones have a 3.5 mm male connector.
8 Hz lower bass extension
JBL Synchros S700 has a lower lowest frequency than the average headphone (10 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
What it is: Lowest audio frequency the headphones can reproduce
When it matters: When deeper bass extension matters for your music or movie listening.
Importance: MEDIUM
Good value: <=10 Hz
JBL Synchros S700 has a lower lowest frequency than the average headphone (10 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.10 Hz vs 18 Hz
On-device controls
JBL Synchros S700 includes on-device controls, the average headphone does not. 46.8% of headphones support on-device controls.
What it is: Physical controls available directly on headphones
When it matters: When you need playback, volume, or call controls to be easy to reach without pulling out your phone.
Importance: MEDIUM
JBL Synchros S700 includes on-device controls, the average headphone does not. 46.8% of headphones support on-device controls.
7 mm more spacious earcup width
JBL Synchros S700 offers more spacious earcup width than the average headphone (50 mm vs 43 mm). The average headphones offer an inner earcup width of 43 mm.
Spatial audio support
JBL Synchros S700 supports spatial audio, the average headphone does not. 30.7% of headphones support spatial audio.
10 mm larger driver size
JBL Synchros S700 uses a larger driver size than the average headphone (50 mm vs 40 mm). The average headphones use a driver size of 40 mm.
15 dB/mW higher sensitivity
JBL Synchros S700 has a higher sensitivity than the average headphone (117 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
8 Hz lower bass extension
JBL Synchros S700 has a lower lowest frequency than the average headphone (10 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
14 dB SPL higher sound pressure level
JBL Synchros S700 has a higher sound pressure level than the average headphone (117 dB SPL vs 103 dB SPL). The average headphones reach a sound pressure level of 103 dB SPL.
2,000 Hz higher treble extension
JBL Synchros S700 has a higher highest frequency than the average headphone (22,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.
Rechargeable battery
JBL Synchros S700 has a rechargeable battery, the average headphone does not. 47.9% of headphones have a rechargeable battery.
Direct 3.5 mm plug
JBL Synchros S700 includes a direct 3.5 mm plug, the average headphone does not. 38.8% of headphones have a 3.5 mm male connector.
Clear call microphone
JBL Synchros S700 offers a clear call microphone, while the average headphone does not. 45.6% of headphones support noise-canceling microphones.
On-device controls
JBL Synchros S700 includes on-device controls, the average headphone does not. 46.8% of headphones support on-device controls.
In-line controls
JBL Synchros S700 includes in-line controls, the average headphone does not. 36.4% of headphones support in-line controls.
Quick mic mute
JBL Synchros S700 includes a quick mic mute, the average headphone does not. 33.5% of headphones support a mute function.
EQ customization
JBL Synchros S700 supports EQ customization, the average headphone does not. 23.3% of headphones support EQ.

Calls & Controls

Why is JBL Synchros S700 worse than the average headphone?

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40.4% higher weight
JBL Synchros S700 is heavier than the average headphone (306.1 g vs 218 g). The average pair of headphones weighs 218 g.
10 mm tighter earcup height
JBL Synchros S700 has tighter earcup height than the average headphone (50 mm vs 60 mm). The average headphones offer an inner earcup height of 60 mm.
0.5 hours longer charging time
JBL Synchros S700 has a higher charging time than the average headphone (2.5 hours vs 2 hours). The average headphones need 2 hours to charge.
No voice assistant support
JBL Synchros S700 does not support voice assistants, the average headphone does. 60.8% of headphones support voice assistants.
4 years older release date
JBL Synchros S700 was released earlier than the average headphone (2013 vs 2017). The average headphones were released in 2017.
September 2013
No voice assistant support
JBL Synchros S700 does not support voice assistants, the average headphone does. 60.8% of headphones support voice assistants.
What it is: Compatible with voice assistants like Siri, Alexa, or Google Assistant
When it matters: When hands-free control is part of your daily routine.
Importance: LOW
JBL Synchros S700 does not support voice assistants, the average headphone does. 60.8% of headphones support voice assistants.
40.4% higher weight
JBL Synchros S700 is heavier than the average headphone (306.1 g vs 218 g). The average pair of headphones weighs 218 g.
What it is: Total weight of the headphones
When it matters: When long listening sessions make wearing comfort more important.
Importance: MEDIUM
Good value: <150 g
JBL Synchros S700 is heavier than the average headphone (306.1 g vs 218 g). The average pair of headphones weighs 218 g.306.1 g vs 218 g
0.5 hours longer charging time
JBL Synchros S700 has a higher charging time than the average headphone (2.5 hours vs 2 hours). The average headphones need 2 hours to charge.
What it is: Time required for a full battery charge
When it matters: When you often need the headphones ready again after short breaks.
Importance: MEDIUM
Good value: <=2 hours
JBL Synchros S700 has a higher charging time than the average headphone (2.5 hours vs 2 hours). The average headphones need 2 hours to charge.2.5 hours vs 2 hours
10 mm tighter earcup height
JBL Synchros S700 has tighter earcup height than the average headphone (50 mm vs 60 mm). The average headphones offer an inner earcup height of 60 mm.
What it is: Internal height of the earcup cavity
When it matters: When larger ears need enough space inside the earcups.
Importance: MEDIUM
JBL Synchros S700 has tighter earcup height than the average headphone (50 mm vs 60 mm). The average headphones offer an inner earcup height of 60 mm.50 mm vs 60 mm
3.44x more expensive
JBL Synchros S700 is more expensive than the average headphone (£310 vs £90).
JBL Synchros S700 is more expensive than the average headphone (£310 vs £90).£310 vs £90
27.5% lower user score
JBL Synchros S700 has a lower user score than the average headphone (6.28 vs 8.000).
What it is: A rating that combines user reviews and the total number of reviews received by the headphones.
When it matters: When you want to understand how headphones perform in real listening and how reliable they are in terms of comfort, audio quality, battery life, and long-term use.
JBL Synchros S700 has a lower user score than the average headphone (6.28 vs 8.000).6.28 vs 8
4 years older release date
JBL Synchros S700 was released earlier than the average headphone (2013 vs 2017). The average headphones were released in 2017.
September 2013
What it is: Official release or launch date of the model
When it matters: When you want a newer model for fresher features, longer support life, or simply to avoid buying into an older generation.
Importance: LOW
Good value: >=2020
JBL Synchros S700 was released earlier than the average headphone (2013 vs 2017). The average headphones were released in 2017.2013 vs 2017

Graphic comparison of JBL Synchros S700 and

Attribute category

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Third-party reviews

United Kingdom

United States

(Reviews last updated: June 2026)

What customers like about JBL Synchros S700?

Premium build quality featuring die-cast aluminium and steel components
Deep, powerful, and accurate bass response without distortion
High level of comfort for long listening sessions due to soft leather ear cushions
Excellent battery life, often reaching 25-28 hours of powered use
Versatile connectivity with dedicated cables for both iOS and Android included
Ability to play in passive mode even when the battery is depleted
Impressive clarity in the midrange and highs during standard playback

What customers dislike about JBL Synchros S700?

The LiveStage DSP feature is polarizing; many users find it makes audio sound thin or 'tinny'
Proprietary 2.5mm to USB charging cable is difficult to replace if lost
High initial retail price compared to some similarly performing competitors
Strong head-clamping force can cause discomfort or headaches for some users after extended wear
Noticeable weight due to the metal construction may feel heavy to some
The included carrying case is soft-sided and offers less protection than a hard shell case
Included audio cables are relatively short and feel thin or low-quality

Expert reviews

au.pcmag.com

21/11/2013

Summary of the review

JBL Synchros S700 - Review 2013 Would you like a summary of the pros and cons identified in these specific reviews?

The JBL Synchros S700 is an over-ear headphone pair that delivers mixed results based on how it is powered, earning a 3.0 average rating. In passive mode, the headphones offer high-quality, balanced audio with dynamic bass response and crisp, clear mids and highs without distortion even at maximum volumes. The design boasts extremely comfortable leather-cushioned earcups and a steel headband, making them pleasant for long listening sessions. Additionally, it features a removable cable and includes two separate detachable cables with inline remotes—one optimized for iOS devices and another for Android devices. However, the headphones suffer from significant drawbacks tied to their central feature and charging mechanism. The built-in "LiveStage DSP" intended to recreate a live performance environment flat-out ruins most music mixes, turning tracks into an overly sibilant, unbalanced, or tinny disaster. Because this poor-performing DSP is the primary justification for the steep $349.95 price tag, the reviewer notes that the device is heavily overpriced compared to better-performing competitors. Finally, charging is inconvenient because it uses the 3.5mm audio jack, meaning users cannot listen to music while the headphones are...

head-fi.org

15/11/2013

Summary of the review

JBL Synchros S700 Premium Powered Over-Ear Stereo Headphones Reviews

The JBL Synchros S700 headphones are highlighted as a heavy-duty, high-end option featuring robust all-metal construction, a steel-reinforced headband, and real leather earpads. They deliver outstanding audio clarity with deep, accurate bass and crystal-clear highs, along with comfortable earpads for long-term wear. Conversely, the headphones are quite heavy and, for some, possess an intense clamping force that may cause discomfort, while the proprietary 2.5mm cable connector makes finding replacements difficult. Additionally, the built-in LiveStage DSP technology creates an unnatural sound on standard studio tracks, requiring users to switch it off.

geekdad.com

16/02/2014

Summary of the review

JBL Synchros S700 Headphones Tested with Beastie Boys

JBL Synchros S700 Review Summary The JBL Synchros S700 is a premium, rechargeable over-the-ear headphone model retailing for $349.99, specifically engineered for audiophiles, DJs, and sound engineers who prioritize bass performance. Its standout feature is the proprietary, patent-pending LiveStage signal processing technology. Activated via a hidden power button on the left ear cup, this feature drastically pulls out and explodes low-end tones without relying on noise-cancelling technology. Tested against competitors like Beats Solo and Able Planet Clear Harmony, the S700 delivered vastly superior bass output. Additional pros include an exceptional built-in lithium-ion battery life that lasts for at least 28 hours, the ability to play audio passively even when the battery is completely dead, and a luxurious, comfortable design featuring real leather ear cups paired with lightweight aircraft aluminum trim.

techwelike.com

15/12/2013

Summary of the review

JBL Synchros S700 Headphones Review - TechWeLike

The TechWeLike review highlights the JBL Synchros S700 as a premium, powerful headphone featuring proprietary "LiveStage" DSP, which delivers a realistic, expanded soundstage and deep, punchy bass without sacrificing audio clarity. While offering high-end audio performance, the $349.99 headphones are a significant investment and the LiveStage, while impressive on many tracks, does not uniformly enhance all types of musical mixes.

technogog.com

27/07/2014

Summary of the review

Review of JBL Synchros S700 Headphones

Despite the high praise, the reviewer highlighted a few drawbacks to consider before purchasing. The primary pros include a gorgeous aesthetic, unbelievable sound quality with top-tier bass performance, highly effective passive isolation that prevents sound leakage, and a premium velvety travel case. On the negative side, the S700's bulky design makes them less than ideal for active scenarios like jogging, and their tight, over-ear seal can cause the user's ears to feel warm during long-haul listening sessions. Additionally, the reviewer noted that the LiveStage spatial audio effect is not well-suited for all music genres, and found the choice of a non-standard 4.5mm audio port on the driver to be a bit odd.

ibtimes.com

25/10/2013

Summary of the review

JBL Synchros S700 Headphones Review: The Sound You've Been Waiting For

The IBTimes review of the JBL Synchros S700 praises the premium, powered over-ear headphones for their durable construction, featuring die-cast aluminum, steel, and genuine leather rather than plastic. The design offers a comfortable, lightweight fit with an innovative unhinged, foldable steel headband that allows for easy, personalized sizing. International Business TimesPerformance is lauded for delivering phenomenal, immersive sound quality that significantly outperforms standard earbuds. However, cons include the high retail price, a bulky, industrial, DJ-style aesthetic, and a design that only folds flat rather than collapsing, necessitating a larger carrying case.

cnet.com

09/10/2013

Summary of the review

JBL Synchros S700: A bass lover's headphone par excellence

The JBL Synchros S700 is a robust, over-the-ear, closed-back headphone specifically engineered to deliver incredibly deep, powerful bass that outplumbs rivals like the Beats Pro. Built with precision die-cast aluminum earcups and a steel-reinforced headband, it avoids a cheap plastic look and offers high structural durability due to its non-hinged design. A major highlight is JBL's proprietary LiveStage digital signal processing, powered by a built-in lithium-ion battery lasting up to 28 hours, which expands the soundstage and excels on sparsely mixed recordings. Retailing at $349, the headphones feature large 50mm drivers and a universal three-button inline mic and remote compatible with both iOS and Android devices. However, the headphone's heavy emphasis on low-end frequencies results in an unevenly balanced sound profile that lacks natural midrange and treble accuracy, making it poorly suited for audiophiles. Furthermore, the LiveStage processing can be hit-or-miss; on densely mixed music, it tends to thin out the bass and artificially brighten the treble rather than truly mimicking a speaker setup. Comfort is another notable drawback, as the high head-clamping pressure negatively impacts long-term wear, though it...

pcmag.com

20/11/2013

Summary of the review

JBL Synchros S700 Review - PCMag

The JBL Synchros S700, reviewed by PCMag, are premium, over-ear headphones featuring a durable die-cast metal frame, exceptionally comfortable leather earcups, and excellent, distortion-free audio performance in passive mode. The headphones include two detachable cables for device compatibility, providing strong, clear sound when not using the active features. YouTube· Conversely, the S700 is heavily criticized for its $349.95 price point and a "LiveStage DSP" mode that produces an unflattering, excessive EQ effect. Furthermore, the design forces users to charge the battery through the 3.5mm jack, prohibiting listening while charging, leading to a recommendation that the product is only worth purchasing if priced much lower, around $200.

computerbild.de

30/06/2014

Summary of the review

JBL Synchros S700 Headphones Review - COMPUTER BILD

The JBL Synchros S700 is a premium over-ear headphone that earns a "good" rating of 2.2 for its robust sound profile and high-end build quality. Visually appealing and durable, it features a construction made of steel, aluminum, and leather, though its soft leather ear pads can make the wearer's ears sweat over time. A major technical highlight is its built-in electronics powered by an integrated rechargeable battery, which can be charged via a proprietary-to-USB adapter cable. Crucially, the headphones remain fully operational even when the battery is completely drained. For added functionality, it ships with three distinct cables—including options for smartphone hands-free calling and playback control—and its earcups can rotate flat for easier transport, though the frame itself cannot be folded. Performance and usability testing reveals distinct advantages and drawbacks. On the positive side, the headphones deliver a powerful, full-bodied sound with deep bass, high volume compatibility with smartphones, excellent material craftsmanship, and practical hands-free functionality. When the active "Live Stage" electronic mode is switched on via the hidden logo button, it successfully expands the spatial perception of the music...

newgadgets.de

31/08/2014

Summary of the review

Review: JBL Synchros S700 - Active Over-Ear Headphones

The JBL Synchros S700 is a premium, over-ear headphone built with a durable blend of die-cast aluminum and a brushed stainless steel headband. Weighing a hefty 350 grams, it offers exceptional build quality and deep, soft leather ear padding that ensures comfortable long-term wear, despite causing the ears to sweat in warmer conditions. The retail package includes a protective soft carrying case, a USB charging cable, and two distinct 122cm audio cables featuring 3-button in-line remotes customized for Apple and Android devices. However, the unusual 2.5mm headphone jack input makes finding third-party replacement cables difficult, and the in-line remote is positioned too low on the cable, frequently getting trapped beneath the user's clothing collar. In passive operation, the headphone utilizes 50mm drivers to deliver a warm, balanced sound profile driven by a heavy PureBass foundation, though this prominent bass can occasionally muddy the crispness of treble frequencies in genres like rock and metal. Pressing the power button activates the proprietary LiveStage DSP technology, which draws on an internal battery lasting up to 28 hours to simulate a wide, room-filling concert...

hifitest.de

15/05/2014

Summary of the review

JBL Synchros S700 - Hi-Fi Headphones Review - Very Good - hifitest.de

The JBL Synchros S700 is a highly praised premium over-ear headphone evaluated in the "Spitzenklasse" (top tier) category with a very good price-to-performance ratio. Its standout design element is an integrated active amplifier powered by a rechargeable battery that delivers up to 28 hours of playback and powers the proprietary JBL LiveStage signal processing. The reviewer emphasizes the exceptional build quality, showcasing heavy-duty materials like die-cast aluminum ear cups and a spring steel headband that ensure durability. Sonically, the S700 defies typical consumer-bass expectations by delivering a remarkably balanced, neutral, and precise acoustic profile, offering clean extension from deep bass up to refined high frequencies. It noticeably elevates the spatial depth and clarity of average source equipment like smartphones, while still providing an excellent, slightly fuller acoustic experience when the electronics are powered off. On the downside, the headphone's premium material selection comes with a substantial physical weight of 365 grams, though this heavy build is mitigated by soft leather padding that effectively distributes pressure across the head. Another notable drawback is the exclusion of a dedicated home audio cable...

connect.de

23/07/2014

Summary of the review

JBL Synchros S 700 Review - On-Ear Headphones - Connect

The JBL Synchros S 700 is a premium on-ear headphone featuring an integrated digital signal processor (DSP) called LiveStage, designed to create a spacious, concert-like soundstage outside of the listener's head. In listening tests, the 50mm drivers delivered a fine-tuned, wide stage with deep, powerful bass and detailed mids, particularly shining on vocal and acoustic tracks. While the DSP adds a "spherical" quality to certain songs, the reviewer noted that many records actually sounded better in passive mode, where the audio remained more natural and balanced. Pros and Cons Pros ConsExcellent spatial imaging and a "wide-open" sound character. DSP trade-offs: Activating the digital processing can result in a bass drop-off and slightly increased distortion. High-quality build featuring an aluminum headband and fine leather-padded earcups. Treble roll-off: In passive mode, there is a noticeable decline in high frequencies above 10 kHz. Strong battery life of up to 28 hours to power the DSP functions. Heat buildup: The soft synthetic leather can cause ears to become warm during long listening sessions. Are you looking for a portable pair of headphones for travel,...

01net.com

01/12/2013

Summary of the review

JBL Synchros S700 Datasheet - 01net.com Les Numériques

The 01net.com review approves the JBL Synchros S700 as a luxurious, high-end closed-back headset priced publicly at €300.00. The publication praises its physical architecture, highlighting an elegant, solid, and comfortable circum-aural design equipped with dual audio cables and a dedicated transport case. Acoustically, it delivers a well-balanced stereo performance characterized by prominent bass and excellent detailing. The core selling point is the battery-powered JBL LiveStage signal processing technology, which successfully creates a highly realistic, concert-hall-style listening experience that excels during live music playback. 01 However, the review exposes several functional drawbacks regarding its portability and active features. Despite the premium price tag, the Synchros S700 completely lacks an active noise cancellation (ANC) system, meaning users cannot electronically block ambient external noise. From a structural standpoint, the headband and earcups cannot be folded, making it less compact to pack away, while its overall weight is notably heavy at 366 grams. Furthermore, while the headset features inline controls on its removable 1.25-meter cables, it does not incorporate a microphone built directly into the physical structure of the ear cup casing itself.

wearemobians.com

12/01/2014

Summary of the review

Review: JBL Synchros S700 and S500 headphones", "JBL Synchros S700 and S500 headphones review

for the JBL Synchros S700 and S500 headphones: The review highlights both models as part of JBL’s high-end line featuring massive 50mm drivers and a bass-heavy profile tailored to compete with brands like Beats by Dr. Dre. The flagship Synchros S700 is highly praised for its premium build quality, showcasing an adjustable brushed steel headband, soft leather padding, and molded aluminum earcups. It delivers excellent noise isolation, high comfort, and a generous 28-hour active battery life from its built-in rechargeable battery. In contrast, the slightly less luxurious Synchros S500 features a modified design powered by two AAA batteries that yield roughly 20 hours of playback. Both units are bundled with a semi-rigid carrying case and two audio cables with integrated inline remotes tailored separately for Apple and Android/Windows Phone devices. Despite the solid build and powerful passive performance, the reviewer is intensely critical of JBL's signature LiveStage DSP technology, labeling it as non-essential and unpleasant for most music genres. Activating LiveStage—via a long press on the S700 or a switch on the S500—strips away the natural bass, introduces audible background...

lesnumeriques.com

19/12/2013

Summary of the review

JBL Test: LiveStage and PureBass Featured Onboard the Synchros S700", "Review: JBL Packs LiveStage and PureBass into the Synchros S700

The JBL Synchros S700 is a versatile, circum-aural nomad headphone built with high-quality leather, steel, and aluminum materials that offer excellent ergonomics and lasting comfort. It can be operated in both passive and active modes, boasting a long battery life of 28 hours and integrated hands-free controls. In passive mode, the device delivers a warm, well-balanced sound at lower volumes, experiencing minimal audio distortion even when pushed to maximum levels. It functions effectively across various musical genres, making it a highly adaptable all-terrain headphone for daily transit. However, the headphone exhibits significant drawbacks, particularly regarding its unbalanced and occasionally muffled default sound profile. Its headline feature, the "LiveStage" active processing technology, fails to deliver and heavily degrades audio quality by introducing harsh synthetic highs, poor reverb, and reduced stereophony. Furthermore, high volumes in active mode trigger prominent harmonic distortion, making the tracks sound aggressive. Finally, the metallic paint on the exterior chasis scratches easily, requiring users to constantly use the protective case to avoid aesthetic wear.

nwtv.nl

09/01/2014

Summary of the review

Review: JBL Synchros S700 - NWTV

The JBL Synchros S700 is a premium, exceptionally solid pair of headphones that delivers a highly natural, lively, and realistic sound stage. Priced at €350, it targets the high-end audio segment and justifies its premium status through its unique, high-quality audio reproduction. In terms of advantages, the review praises the exceptional build quality, featuring all-steel speaker housings that easily handle rough treatment and make the headphones feel noticeably more robust than plastic competitors. Furthermore, the acoustic performance stands out with incredibly sharp high tones and highly clear, powerful low frequencies powered by JBL's proprietary PureBass technology. However, the reviewer highlights several prominent drawbacks that may deter potential buyers, specifically noting its massive size and high price tag. Due to the heavy metal construction, the S700 is considerably heavier than most average headphones and features a rigid design that cannot be folded down for compact transport. The extra LiveStage DSP (live-mode) audio feature also receives criticism for being inconsistent. When activated via a button on the left ear cup, it completely drains the bass frequencies on most songs, rendering it useful...

alpha-audio.net

24/04/2014

Summary of the review

Review JBL Synchros S700 - Alpha Audio

The Alpha Audio review of the €299 JBL Synchros S700Go highlights a robust, premium-built, over-ear headphone with a solid aluminum and leather construction, delivering a clear, energetic, and bass-forward sound. Key strengths include high-quality build materials, excellent wear comfort, and two detachable cables for versatile Android/iOS connectivity, though the unit is relatively heavy. However, the review points out that the proprietary LiveStage DSP, designed to mimic a live environment, produces inconsistent results across different musical genres, sometimes negatively altering studio mixes. Another notable limitation is the inability to listen to music while charging, as the 3.5mm input is also used for charging the 28-hour battery.

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