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Reviewed on Jul 27, 2017

Bluedio U Plus/UFO Wireless HEADPHONES REVIEW

Type : Over-ear
Enclosure : Closed-Back
Wireless : Yes
Noise-Cancelling : No
Mic : Yes
Transducer : Dynamic

The Bluedio U Plus are decently sturdy and comfortable wireless headphones with a sleeker design than the rest of the Bluedio lineup. Unfortunately, they have a sub-par sound quality that may be a deal breaker for most, especially at their price range. They're also a bit too bulky for sports and do not block enough noise to use in loud environments.

Test Results
Design 6.8
Sound 5.1
Isolation 5.8
Microphone 4.7
Active Features 6.1
Connectivity 5.6
Pros
  • Sturdy build quality.
  • Decent wireless range and battery life.
  • Efficient control scheme.
Cons
  • Poor sound quality.
  • Below-average Noise isolation.
  • Bulky design.
  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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Summary

  • 5.8 Mixed Usage
  • 5.4 Critical Listening
  • 6.1 Commute/Travel
  • 6.3 Sports/Fitness
  • 6.1 Office
  • 5.3 TV
  • 5.0 Gaming
Mixed Usage 5.8

The Bluedio UFO are mediocre mixed usage headphones. They have a sleek design, an above-average build quality, and a decently comfortable fit. Unfortunately, their sound quality may be a deal breaker for most especially considering their price range. They also do not block a lot of noise so they won't be the ideal headphones for commuting or loud environments. They're also too bulky and unstable to be suitable for sports.

Critical Listening 5.4

Poor for critical listening. Their sound profile overemphasizes the low-end and has a big dip in the mid-range which makes instruments and vocals feel a bit distant on most tracks. Turning on the EQ effect adds even more bass and muddiness to their audio reproduction which is a bit disappointing. Unfortunately, they also have a relatively small Soundstage due to their closed back design. Overall this results in a boomy and muddy sound quality that won't be ideal for most listeners and will most likely be a deal breaker for more critical listeners.

Commute/Travel 6.1

Average-at-best for commuting. They do not block enough noise to be a good option in very loud environments. On the upside, they have an easy-to-use control scheme and they're decently comfortable but won't be the easiest headphone to carry around.

Sports/Fitness 6.3

Average for sports. They're big and bulky headphones that aren't the most stable to run with. However, they're wireless and have a fairly simple and straightforward control scheme so that you don't have to pull out your phone or Bluetooth device to skip tracks.

Office 6.1

Average-at-best for office use. They won't block that much ambient noise so you may still be able to hear whats going on around you in a lively office. They also leak a bit at high volumes so they may be distracting to those around you in quieter conditions.

TV 5.3

Below-average for home theater. Unless you use these headphones wired they won't be the best for watching videos as their latency will cause some sync issues. On the upside, they're above average comfortable so they should be ok to wear for a couple hours.

Test Results

Style

The Bluedio U plus have a very different look to the Bluedio Turbine line up. The hinges rotate instead of folding and do not protrude outwards which give the U-Plus a more sleek design. They look and feel like the Beats Pro and even have the same daisy chain and locking mechanism for the audio cable. They come in two color schemes; black and white, and are they're also considerably larger and stand out more than the other models in the Bluedio lineup.

7.0 Comfort
Weight : 0.9 lbs
Clamping Force
:
1.1 lbs

The Bluedio U Plus are above-average comfortable headphones. They're well padded and have sufficiently large ear cups to fit most listeners. However, they're a bit tight on the head and relatively heavy so they may get fatiguing after a while.

7.1 Controls
Ease of use : Decent
Feedback : Okay
Call/Music Control : Yes
Volume Control : Yes
Microphone Control : No
Channel Mixing
:
N/A
Noise Canceling Control : N/A
Talk-Through
:
N/A
Additional Buttons : Bass Effect

The Bluedio U Plus have a much better control scheme than on previous models. The buttons are clicky and ergonomically laid out on the right ear cup. They provide the essential functions; call/Music, track-skipping and volume controls. They also have an additional feature that lets you switch between EQ effects by holding the track skipping buttons. Forward to turn on the effect and Rewind to turn off.

6.5 Stability

The Bluedio UFO have a tight fit that prevents them from being too unstable. They're also wireless so they won't get yanked off your head because the audio cable got caught on something. However, they are bulky and heavy headphones so they sway a lot when running so they won't be the ideal headphones for sports.

5.8 Portability
L : 4.8 "
W : 7.3 "
H : 3.6 "
Volume : 126 Cu. Inches
Transmitter required : N/A

The Bluedio U Plus are somewhat portable thanks to their folding design. However, they're still quite large headphones compared to other mid-sized over-ear models. They're not the easiest to carry around on your person but when folded they take up less space and should easily fit in your bag.

7.5 Case
Type : Hard case
L : 8 "
W : 8.6 "
H : 3.9 "
Volume : 268 Cu. Inches

Comes with a sturdy hard case that will protect the U Plus against scratches drops and minor water damage. However, the case does add quite a bit of bulk making the already large headphones a little less portable.

7.0 Build Quality

The Bluedio U are decently well-built but not as durable as the much cheaper Bluedio T4. They have a sturdy metal frame to reinforce the headband and the ear cups are decently dense. They won't break easily from a couple of drops but the enclosures of the ear cups feel a lot cheaper than that of the T4s. The revolving hinges are also potential weak points that may loosen over time.

6.6 Breathability
Avg.Temp.Difference : 5.2 C
Cable
Detachable : Yes
Length : 4.5 ft
Connection : 1/8" TRS

Comes with Two cables; A coiled 1/8 TRS audio cable and a USB charging cable.

Top
Headshots 1
Headshots 2
5.6 Bass
Std. Err.
:
6.52 dB
Low-Frequency Extension
:
10 Hz
Low-Bass
:
6.96 dB
Mid-Bass
:
7.94 dB
High-Bass
:
6.18 dB

Poor Bass Range performance. The response is relatively flat, but consistently over our target by more than 7dB. This makes the Bass of these headphones quite overpowering and boomy.

3.3 Mid
Std. Err.
:
8.95 dB
Low-Mid
:
-8.03 dB
Mid-Mid
:
-10.9 dB
High-Mid
:
1.17 dB

Poor Mid Range performance. Low-mid and mid are practically missing, due to the 15dB dip surrounding 500Hz. This significantly pushes vocals and leads to the back of the mix. On the other hand, high-mid is relatively flat and well-balanced.

4.5 Treble
Std. Err.
:
6.46 dB
Low-Treble
:
2.44 dB
Mid-Treble
:
-4.94 dB
High-Treble
:
-6.08 dB

Poor and inconsistent Treble Range performance. Low-treble is slightly overemphasized, adding a bit of tinny quality to the sound. The dip around 7KHz hurts some of the sibilances (S and T sounds) to the point of making the sound lispy. Conversely, the peak around 10KHz will have the opposite effect on some higher frequency sibilances, making them sharp and piercing.

6.6 Frequency Response Consistency
Avg. Std. Deviation
:
0.73 dB

Average Consistency performance. In the Bass Range, these headphones perform quite consistently across our multiple human subjects, except for our subject who wears glasses. It seems that glasses could break the air-tight seal that these headphones need for creating their Bass and cause more than 3dB of drop in Bass below 200Hz. In the Treble Range, their consistency is good.

4.5 Soundstage
PRTF Accuracy (Std. Dev.)
:
3.83 dB
PRTF Size (Avg.)
:
-0.7 dB
PRTF Distance
:
9.79 dB
Openness
:
4.4
Acoustic Space Excitation
:
4.4
Correlated Crosstalk
:
0.0 dB
8.1 Imaging
Weighted Group Delay
:
0.39
Weighted Amplitude Mismatch
:
0.65
Weighted Frequency Mismatch
:
1.76
Weighted Phase Mismatch
:
12.2
7.1 Total Harmonic Distortion
Weighted THD @ 90
:
3.27
Weighted THD @ 100
:
3.628

Decent Harmonic Distortion performance. The UFO Plus shows elevated amounts of distortion in the Bass Range, but humans are less sensitive to low frequency harmonic distortion. The bump around 500Hz, corresponds to the dip in the frequency response of the same range making them less audible. The sharp peaks in the Treble Range however, could make those frequency slightly harsh.

5.6 Noise Isolation
Isolation Audio
:
Overall Attenuation
:
-14.16 dB
Bass
:
0.91 dB
Mid
:
-9.75 dB
Treble
:
-34.46 dB
Self-Noise
:
16.92 dB

Poor Isolation performance. The Bluedio U headphones don't have active noise-cancellation and isolate only passively. They achieve no isolation in the Bass Range. In the Mid Range they achieve about 9dB of reduction, which is decent. In the Treble Range they reduce the outside noise by more than 34dB which is good.

6.2 Leakage
Leakage Audio
:
Overall Leakage @ 1ft
:
43.87 dB

Mediocre Leakage performance. The significant portion of the leakage sits between 500Hz and 5KHz which is a relatively broad range. The overall level of the leakage is also relatively high, especially around 3KHz.

5.9 Recording Quality
Recorded Speech
:
LFE
:
375.09 Hz
FR Std. Dev.
:
3.42 dB
HFE
:
3272.31 Hz
Weighted THD
:
7.237
Gain
:
25.06 dB
3.5 Noise Handling
Speech + Pink Noise :
Speech + Subway Noise :
SpNR
:
3.68 dB
7.0 Wireless Range
Obstructed Range
:
26 ft
Line of Sight Range
:
123 ft

The Bluedio UFO have a slightly below average wireless range when the Bluetooth source is obstructed. They reached just above 25ft but in direct line of sight, they performed much better reaching about 120ft. It should be enough range for most casual applications and they're also not too difficult to pair. Although they do not support NFC, pressing and holding the multi-function button when turning the headphones on puts them in pairing mode relatively fast.

4.3 Latency
Default Latency
:
148 ms
aptX Latency
:
N/A
aptX(LL) Latency
:
N/A

The Base Latency of the Bluedio U Plus is a bit better than most Bluetooth headphones. However, it's still a bit too laggy for watching movies and gaming. You may get used to it during long videos but it won't be the most pleasurable viewing experience.

6.8 Battery
Battery Type
:
Rechargable
Battery Life
:
20.6 hrs
Charge Time
:
3.4 hrs
Power Saving Feature
:
No
Audio while charging
:
Yes
Passive Playback
:
Yes

The Bluedio UFO have an above-average battery life of 20 hours but take a considerably long time to charge. They don't have an auto off feature but can charge while playing. They can also be used completely passively with the audio cable, which makes them a decent option for the office.

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
6.0 Bluetooth
Bluetooth Version
:
4.1
Multi-Device Pairing
:
No
NFC Pairing
:
No
7.2 Wired
OS Compatibility
:
Not OS specific
Analog Audio
:
Yes
USB Audio
:
No
PS4 Compatible
:
Audio Only
Xbox One Compatible
:
Audio Only
PC Compatible
:
Audio Only
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
In the box

  • Bluedio U (UFO) Plus  headphones
  • Audio cable
  • Carrying Case
  • USB charging cable

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