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Reviewed on Apr 22, 2016

BÖHM B-66 Wireless HEADPHONES REVIEW

Usage Ratings - Version 1.2
6.6
Mixed Usage
7.0
Critical Listening
6.4
Commute/Travel
6.9
Sports/Fitness
6.6
Office
5.9
TV
5.7
Gaming
Type : On-ear
Enclosure : Closed-Back
Wireless : Yes
Noise-Cancelling : Yes
Mic : Yes
Transducer : Dynamic

The Bohm B-66 are above-average wireless Bluetooth headphones that sound great and won't disturb the people around you at high volumes. They're stable enough to not slip off your head easily but feel too tight, which can get uncomfortable. They also poorly isolate listeners from ambient noise in loud environments.

Test Results
Design 6.6
Sound 7.1
Isolation 6.7
Microphone 6.1
Active Features 4.7
Connectivity 6.8
Pros
  • Great audio reproduction.
  • Minimal leakage.
  • Stable fit.
Cons
  • Uncomfortable clamping pressure.
  • Poor noise isolation.
  1. Update 2/16/2018: Converted to Test Bench 1.2.
  2. Update 9/28/2017: The microphone has been tested with our new methodology, as explained here
  3. Update 8/10/2017: Converted to Test Bench 1.1. Learn more about our new versioned test bench system here.

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6.6

Design

The Bohm wireless headphones look great and are surprisingly stable for an on-ear design. They have an efficient control scheme with strong tactile feedback. The ear cups and headband feel sufficiently sturdy to handle a few drops without damage. Unfortunately, they are not comfortable. The small ear cups apply too much pressure on the ears, which can cause soreness and fatigue, especially during long listening sessions.

Style

The Bohm Wireless Bluetooth are sleek looking headphones. They have a two-tone black and silver color scheme that looks great feels modern. This, combined with their wireless design, gives them a minimalist aesthetic that's visually appealing. They are also offered in a different color scheme.

6.0 Comfort
Weight : 0.37 lbs
Clamping Force
:
1.05 lbs

The Bohm B-66 wireless headphones feel too tight on the head. They are moderately well-padded and the ear cups, although small rest well on the ears. Unfortunately, to maintain a stable fit the headband exert an uncomfortable amount of tension on the head. This makes the headphones hard to use for long listening sessions as the pressure can cause soreness and physical fatigue.

6.0 Controls
Ease of use : Mediocre
Feedback : Good
Call/Music Control : Yes
Volume Control : Yes
Microphone Control : No
Channel Mixing
:
N/A
Noise Canceling Control : No
Talk-Through
:
No
Additional Buttons : No

Button layout and functionality is above-average. These headphones provide call/music, track-skipping, and volume controls. The buttons have excellent tactile feedback, but the overlapping functions for volume and track-skipping controls might take some time to get used to.

7.7 Breathability
Avg.Temp.Difference : 2.6 C
6.4 Portability
L : 7.09 "
W : 6.69 "
H : 1.38 "
Volume : 65.41 Cu. Inches
Transmitter required : N/A

The Bohm B-66 are mid-sized on-ear headphones that do not take up much space in a backpack or handbag. Unfortunately, they do not fold up into a compact format, which means they won't fit in a pocket, even large jacket pockets.

8.0 Case
Type : Hard case
L : 8.66 "
W : 8.66 "
H : 1.57 "
Volume : 118.11 Cu. Inches

These headphones come with a sturdy hard case that will protect them from scratches and from falls. However, it does add a little bit of volume to the headphones.

6.5 Build Quality

Build quality is average at best. The Bohm wireless Bluetooth headphones are sturdy enough to handle a few drops without being damaged. Unfortunately, their lightweight design doesn't feel as durable as some other headphones and the swivel mechanism feels loose and susceptible to breaking under physical stress.

7.5 Stability

The Bohm Bluetooth headphones are surprisingly stable on the head. The clamping tightness that may be uncomfortable for some prevents these headphones from slipping off the ears even while running. They're not designed for sports so during high-intensity activities they will move slightly, but they easily maintain their position during casual listening sessions.

Cable
Detachable : Yes
Length : 4.23 ft
Connection : 1/8" TRRS

Comes with; a 1/8" TRRS-TRRS audio cable with a play/music button and a USB charging cable.

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Headshots 1
Headshots 2
7.1

Sound

The Bohm B-66 are an average sounding pair of on-ear closed-back headphones. They have an excellent, consistent, and extended Bass, a good Mid Range and a decent Treble. However, their Bass could be slightly muddy, and their Mid Range is a bit forward sounding. Additionally, they have a mediocre distortion performance and like most closed-back on-ear headphones, a poor Soundstage.

9.1 Bass
Std. Err.
:
1.33 dB
Low-Frequency Extension
:
18.34 Hz
Low-Bass
:
0.3 dB
Mid-Bass
:
0.29 dB
High-Bass
:
2.26 dB
7.5 Mid
Std. Err.
:
3.4 dB
Low-Mid
:
2.11 dB
Mid-Mid
:
-0.97 dB
High-Mid
:
4.46 dB
6.6 Treble
Std. Err.
:
4.64 dB
Low-Treble
:
1.39 dB
Mid-Treble
:
-0.28 dB
High-Treble
:
-10.3 dB
8.3 Frequency Response Consistency
Avg. Std. Deviation
:
0.33 dB
7.5 Imaging
Weighted Group Delay
:
0.21
Weighted Amplitude Mismatch
:
2.24
Weighted Frequency Mismatch
:
2.29
Weighted Phase Mismatch
:
9.24
5.0 Soundstage
PRTF Accuracy (Std. Dev.)
:
2.71 dB
PRTF Size (Avg.)
:
2.55 dB
PRTF Distance
:
8.8 dB
Openness
:
4.0
Acoustic Space Excitation
:
2.3
Correlated Crosstalk
:
0.01 dB
6.7 Total Harmonic Distortion
Weighted THD @ 90
:
3.51
Weighted THD @ 100
:
16.314
6.7

Isolation

The Bohm B-66 poorly isolate listeners in noisy environments. The small ear cups provide a decent amount of passive isolation but not enough to prevent ambient noise from seeping into your audio. Unfortunately, the active noise cancelling is weak and will not be sufficient for loud environments like in a plane or train.

6.0 Noise Isolation
Isolation Audio
:
Overall Attenuation
:
-16.45 dB
Bass
:
-8.08 dB
Mid
:
-7.41 dB
Treble
:
-33.37 dB
Self-Noise
:
17.21 dB

Poor isolation. The passive isolation provided by the ear cups does a good job in the treble range. However, the effectiveness diminishes as the frequency lowers. The active isolation provides a maximum of 10dB of cancellation in the bass range, which is below average and does not do much in the mid and treble ranges.

8.0 Leakage
Leakage Audio
:
Overall Leakage @ 1ft
:
33.9 dB

Very good leakage. The majority of leakage is in the treble range and the overall level is low. Listening to these headphones at loud volumes shouldn't be an issue in most situations.

6.1

Microphone

Integrated
:
Yes
In-line
:
Yes
Boom
:
No
Detachable Boom
:
N/A
6.3 Recording Quality
Recorded Speech
:
LFE
:
246.75 Hz
FR Std. Dev.
:
4.42 dB
HFE
:
3368.2 Hz
Weighted THD
:
2.988
Gain
:
28 dB
6.0 Noise Handling
Speech + Pink Noise :
Speech + Subway Noise :
SpNR
:
11.62 dB
4.7

Active Features

The Bohm B-66 have a good wireless range and relatively low latency considering they don't support aptX or aptX(LL). Unfortunately, they have a poor battery performance. They take exceedingly long to charge and only last about 10 hours of continuous playback. This would be a decent battery life if they had power saving features and didn't take so long to charge but unfortunately they won't be the best headphones to take on the road for on a long weekend without access to a power source.

5.2 Battery
Battery Type
:
Rechargable
Battery Life
:
10.43 hrs
Charge Time
:
4.4 hrs
Power Saving Feature
:
No
Audio while charging
:
No
Passive Playback
:
No

The Bohm B-66 have a battery life that's just below average. Unfortunately, they take surprisingly long to charge, which makes them not ideal for prolonged use. They also can't stream audio and charge at the same time coupled with the lack of an auto-off feature, results, in a poor battery performance overall.

0 App Support
App Name : N/A
iOS : N/A
Android : N/A
Mac OS : N/A
Windows : N/A
Equalizer
:
N/A
ANC control
:
N/A
Mic Control : N/A
Room effects
:
N/A
Playback control
:
N/A
Button Mapping : N/A
Surround Sound : N/A

No compatible app.

6.8

Connectivity

6.0 Bluetooth
Bluetooth Version
:
4.0
Multi-Device Pairing
:
No
NFC Pairing
:
No
9.1 Wired
OS Compatibility
:
Not OS specific
Analog Audio
:
Yes
USB Audio
:
No
PS4 Compatible
:
Audio + Microphone
Xbox One Compatible
:
Audio + Microphone
PC Compatible
:
Audio + Microphone
0 Base/Dock
Type
:
N/A
Optical Input
:
N/A
Line In
:
N/A
Line Out
:
N/A
USB Input
:
N/A
RCA Input
:
N/A
PS4 Compatible
:
N/A
Xbox One Compatible
:
N/A
PC Compatible
:
N/A
Power Supply
:
N/A
Dock Charging
:
N/A
8.4 Wireless Range
Obstructed Range
:
41 ft
Line of Sight Range
:
177 ft

The Bohm B-66 like the Diskin wireless Bluetooth, have an excellent wireless range. The Diskin perform a bit better than the Bohm in direct line-of-sight but in a regular office-like environment, the obstructed range is about the same. They're surprisingly far-reaching compared to some more expensive, better built wireless headphones, which may be due to their relatively thin ear cups casing. On the other hand, they're a bit difficult to pair, and they don't have NFC or dual device pairing.

5.4 Latency
Default Latency
:
122 ms
aptX Latency
:
N/A
aptX(LL) Latency
:
N/A

In the box

  • Bohm B-66 Headphones
  • Carrying case
  • Audio cable
  • USB cable
  • Manual

6.6 Mixed Usage

Decent performance all round the Bohm B-66 will make good everyday headphones if you like their on-ear design.

7.0 Critical Listening

Average for critical listening. They have a good sound but their closed on-ear design limits their soundstages.

6.4 Commute/Travel

Could be better for commuting. Noise isolation is a little weak, but they're lightweight and a decent size to carry around on your person.

6.9 Sports/Fitness

Decent for sports use. They're tight on your head and won't fall easily. However, there not too comfortable.

6.6 Office

Decent for office use. weak isolation lets the chatter of a busy office seep into your audio but they don't leak much.

5.9 TV

Average for home theater use. They have fairly high latency which won't be ideal for watching movies. They're also a bit too tight on the head to wear for long periods of time.

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