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- Table of Contents
- Top
- Main Differences
- Sound
- Design
- Isolation
- Microphone
- Active Features
- Connectivity
- Comments
Devialet Gemini II True Wireless vs Bose QuietComfort Ultra Earbuds Truly Wireless
Side-by-Side Comparison
Products
Devialet Gemini II True Wireless
Bose QuietComfort Ultra Earbuds Truly Wireless
Tested using Methodology v1.8
Updated Mar 31, 2025 09:38 PM
SEE PRICE
Amazon.comTested using Methodology v2.0
Updated Apr 29, 2025 05:37 PM
SEE PRICE
Amazon.com
TypeIn-ear
Noise CancellingYes
EnclosureClosed-Back
WirelessTruly Wireless
TransducerDynamic
MicYes
TypeEarbuds
Noise CancellingYes
EnclosureClosed-Back
Bass AmountEmphasized (4 dB)
WirelessTruly Wireless
TransducerDynamic
Treble AmountBalanced (0 dB)
MicYes
Sound SignatureWarm
Variants
- Gemini II (Iconic White)
- Gemini II (Matte Black)
- QuietComfort Ultra Earbuds (Black)
- QuietComfort Ultra Earbuds (Diamond 60th Anniversary Edition)
- QuietComfort Ultra Earbuds (Lunar Blue)
- QuietComfort Ultra Earbuds (Moonstone Blue)
- QuietComfort Ultra Earbuds (White Smoke)
Our Verdict
Devialet Gemini II True Wireless
Bose QuietComfort Ultra Earbuds Truly Wireless
The Bose QuietComfort Ultra Earbuds Truly Wireless and the Devialet Gemini II True Wireless are both premium buds. The Bose are more comfortable, have a spatial audio feature to help give you a more immersive sound, and they have a better overall battery performance. They support aptX Adaptive, a Bluetooth codec that dynamically adapts to your content, giving you either lower latency or better sound quality. However, the Devialet is better built, which some users may prefer, and also has a better overall noise isolation performance.
Check Price
Iconic White
Gemini II
Searching
Finding storeBlack
QuietComfort Ultra Earbuds
Searching
Finding storeMatte Black
Gemini II
Searching
Finding storeDiamond 60th Anniversary Edition
QuietComfort Ultra Earbuds
Searching
Finding storeLunar Blue
QuietComfort Ultra Earbuds
Searching
Finding storeMoonstone Blue
QuietComfort Ultra Earbuds
Searching
Finding storeWhite Smoke
QuietComfort Ultra Earbuds
Searching
Finding storeMain Differences forNeutral Sound
Neutral Sound
Threshold
Neutral Sound
7.2
Full Comparison
Sound
Sound Profile
Sound Profile
Normalization Frequency
550 Hz
700 Hz
Bass Amount
5.3 dB
Bass Amount
Emphasized (4 dB)
Treble Amount
-0.4 dB
Treble Amount
Balanced (0 dB)
Sound Signature
Warm
Frequency Response Consistency
9.0
9.0
Consistency L
Consistency R
Avg. Std. Deviation
0.2 dB
0.44 dB
Raw Frequency Response
Bass Profile: Target Compliance
7.5
7.5
Bass Profile: Target Compliance
RMS Deviation From Target
5.5 dB
5.3 dB
Low-Frequency Extension
20 Hz
20 Hz
Low Bass
6.54 dB
6.67 dB
Mid Bass
5.01 dB
4.84 dB
High Bass
3.77 dB
2.86 dB
Mid-Range Profile: Target Compliance
8.6
8.7
Mid-Range Profile: Target Compliance
RMS Deviation From Target
1.45 dB
1.78 dB
Low Mid
2.19 dB
1.85 dB
Mid-Mid
0.01 dB
-0.8 dB
High Mid
-0.88 dB
0.06 dB
Treble Profile: Target Compliance
9.1
8.3
Treble Profile: Target Compliance
RMS Deviation From Target
1.92 dB
3.07 dB
Low Treble
0.16 dB
1.88 dB
Mid Treble
-1.09 dB
-2.4 dB
High Treble
-4.07 dB
-8.6 dB
Peaks/Dips
7.0
7.2
Peaks/Dips Graph
Peaks
1.8 dB
1.43 dB
Dips
2.11 dB
2.49 dB
Stereo Mismatch
8.6
Frequency Response Mismatch
Phase Response Mismatch
Weighted Amplitude Mismatch
0.71
0.0 dB
Weighted Frequency Response Mismatch
1.43
0.7 dB
Weighted Phase Mismatch
3.41
2.4°
Cumulative Spectral Decay
CSD
PRTF
0.2
0.0
PRTF
PRTF Accuracy (RMS Deviation)
N/A
N/A
PRTF Size (Avg.)
N/A
N/A
PRTF Distance
N/A
N/A
Openness
0.8
Acoustic Space Excitation
0.2
Harmonic Distortion
9.0
Harmonics Levels
WHD @ 94 dB SPL
0.170
0.09%
WHD @ 104 dB SPL
0.084
0.21%
Electrical Aspects
Impedance
Sensitivity @1kHz-1V
N/A
Bluetooth Max SPL
105.5 dB
Virtual Soundstage
0.0
3.3
Virtual Soundstage
Head Modeling
No
No
Speaker Modeling
No
On/Off
Room Ambience
No
No
Head Tracking
No
Adjustable
Virtual Surround
No
No
Test Settings
Firmware
1.5.6
4.0.20
Power
On
On
Connection
Bluetooth
Bluetooth
Codec
aptX, 32-bit, 48kHz
SBC, 16-bit, 48kHz
Test Instrument
Audio Precision APx517B
Audio Precision APx517B
EQ
Default
No EQ
ANC
On
Quiet
Tip/Pad
Silicone (small)
Silicone (small)
Microphone
Integrated
Integrated
Imaging
8.7
Group Delay
Phase Response Mismatch
Weighted Group Delay
0.28
Weighted Phase Mismatch
3.41
2.4°
Weighted Amplitude Mismatch
0.71
0.0 dB
Weighted Frequency Mismatch
1.43
0.7 dB
Weighted Harmonic Distortion
8.3
Weighted Harmonic Distortion
WHD @ 90
0.170
0.09%
WHD @ 100
0.084
0.21%
Design
Style
Design Picture 2
Type
In-ear
Earbuds
Enclosure
Closed-Back
Closed-Back
Wireless
Truly Wireless
Truly Wireless
Transducer
Dynamic
Dynamic
Comfort
7.5
8.0
Comfort Picture
Weight
0.03 lbs
0.03 lbs
Clamping Force
0 lbs
0 lbs
Controls
7.4
7.7
Controls Picture
OS Compatibility
Not OS specific
Not OS specific
Ease Of Use
Good
Good
Feedback
Mediocre
Good
Call/Music Control
Yes
Yes
Volume Control
Yes
Yes
Microphone Control
No
No
Channel Mixing
No
No
Noise Cancelling Control
On/Off
Presets
Talk-Through
On/Off
On/Off
Additional Controls
No
Voice Assistant
Breathability
Breathability After Picture
Avg.Temp.Difference
Portability
9.6
9.5
Portability Picture
L
1.1" (2.9 cm)
1.0" (2.5 cm)
W
0.9" (2.4 cm)
1.6" (4.0 cm)
H
0.8" (2.0 cm)
0.8" (2.0 cm)
Volume
0.85 in³ (13.90 cm³)
1.22 in³ (20.00 cm³)
Transmitter Required
No
No
Case
8.0
7.5
Case Picture
Type
Hard case
Hard case
L
2.6" (6.5 cm)
2.3" (5.9 cm)
W
1.1" (2.7 cm)
2.1" (5.3 cm)
H
1.5" (3.9 cm)
1.1" (2.7 cm)
Volume
4.18 in³ (68.45 cm³)
5.16 in³ (84.50 cm³)
Build Quality
8.0
7.5
Build Quality Picture
Stability
8.0
8.0
Stability Picture
Headshots 1
Angled Picture
Side Picture
Headshots 2
Front Picture
Rear Picture
Top
Top Picture
In The Box
In The Box Picture
Isolation
Noise Isolation - Full Range
9.2
8.5
Noise Isolation - Full Range Graph
Noise Cancelling
Yes
Yes
Overall Attenuation
-24.99 dB
-22.39 dB
Bass
-22.78 dB
-22.03 dB
Mid
-24.05 dB
-19.97 dB
Treble
-28.72 dB
-25.51 dB
Noise Isolation - Common Scenarios
9.6
8.7
Noise Isolation - Common Scenarios Graph
Airplane Noise Attenuation
-22.65 dB
-20.15 dB
Airplane Noise Isolation Audio
Office Noise Attenuation
-22.57 dB
-19.44 dB
Office Noise Isolation Audio
Street Noise Attenuation
-24.89 dB
-22.06 dB
Street Noise Isolation Audio
Noise Isolation - Voice Handling
Female Voice 1
Male Voice 1
Female Voice 2
Male Voice 2
ANC Wind Handling
ANC Wind Handling Graph
ANC Wind Noise
Leakage
9.8
8.1
Leakage Audio
Overall Leakage @ 1ft
22.41 dB
32.75 dB
Microphone
Microphone Style
Integrated
Yes
Yes
In-Line
No
No
Boom
No
No
Detachable Boom
No
No
Mic
Yes
Yes
Recording Quality
6.6
6.5
Microphone Frequency Response
Recorded Speech
LFE
102.26 Hz
459.13 Hz
FR Std. Dev.
4.54 dB
3.63 dB
HFE
6,267.15 Hz
3,673.05 Hz
Weighted THD
15.322
0.149
Gain
-2.14 dB
34.39 dB
Noise Handling
7.8
4.3
SpNR
19.49 dB
29.17 dB
Noise Gate
Always On
Always On
Speech + Pink Noise Handling
8.0
4.5
Speech + Pink Noise Audio Sample
Speech + Subway Noise Handling
7.5
4.0
Speech + Subway Noise Audio Sample
Active Features
Battery
6.7
7.2
Battery Type
Rechargable
Rechargable
Continuous Battery Life
4.8 hrs
7 hrs
Additional Charges
4.4
3.0
Total Battery Life
21.25 hrs
28 hrs
Charge Time
1.15 hrs
0.9 hrs
Power-Saving Feature
Standby mode
Standby mode
Audio While Charging
Yes
Yes
Passive Playback
No
No
Charging Port
USB-C
USB-C
App Support
8.0
8.0
App Picture
App Name
Devialet Gemini
Bose Music
iOS
Yes
Yes
Android
Yes
Yes
macOS
No
No
Windows
No
No
Equalizer
Graphic + Presets
Graphic + Presets
ANC Control
On/Off
Presets
Mic Control
No
No
Room Effects
No
Yes
Playback Control
No
Yes
Button Mapping
Yes
Yes
Surround Support
No
No
Connectivity
Wired Connection
0.0
0.0
Cable Picture
Analog Audio
No
No
USB Audio
No
No
Detachable
No
No
Length
N/A
N/A
Connector
No Wired Option
No Wired Option
Latency - Analog
N/A
N/A
Latency - USB
N/A
N/A
Recorded Latency
N/A
N/A
Recorded Latency Connection
No Wired Audio
No Wired Audio
Bluetooth Connection
8.3
7.6
Bluetooth Version
5.2
5.3
Multi-Device Pairing
2 Devices
2 Devices
Quick Pair (Android)
Yes
Yes
Quick Pair (iOS)
No
No
Line Of Sight Range
334.65 ft (102.00 m)
334.65 ft (102.00 m)
Latency - SBC
271 ms
292 ms
Latency - aptX
217 ms
N/A
Latency - aptX Adaptive (High Quality)
N/A
372 ms
Latency - aptX Adaptive (Low Latency)
N/A
94 ms
Latency - LDAC
N/A
N/A
Recorded Latency
Recorded Latency Codec
aptX
aptX Adaptive (Low Latency)
AAC Support
Yes
Yes
Wireless Connection (Dongle)
0.0
0.0
Line Of Sight Range
N/A
N/A
Latency - Dongle
N/A
N/A
Recorded Latency
N/A
N/A
PC Compatibility
Analog
No
No
Wired USB
No
No
Non-BT Wireless
No
No
PlayStation Compatibility
PS4 Analog
No
No
PS4 Wired USB
No
No
PS4 Non-BT Wireless
No
No
PS5 Analog
No
No
PS5 Wired USB
No
No
PS5 Non-BT Wireless
No
No
Xbox Compatibility
Xbox One Analog
No
No
Xbox One Wired USB
No
No
Xbox One Non-BT Wireless
No
No
Xbox Series X|S Analog
No
No
Xbox Series X|S Wired USB
No
No
Xbox Series X|S Non-BT Wireless
No
No
Base/Dock
2.2
0.4
Type
Charging Case
Charging Case
USB Input
No
No
Line In
No
No
Line Out
No
No
Optical Input
No
No
RCA Input
No
No
Dock Charging
Yes
No
Power Supply
USB-C
USB-C
Check Price
Iconic White
Gemini II
Searching
Finding storeBlack
QuietComfort Ultra Earbuds
Searching
Finding storeMatte Black
Gemini II
Searching
Finding storeDiamond 60th Anniversary Edition
QuietComfort Ultra Earbuds
Searching
Finding storeLunar Blue
QuietComfort Ultra Earbuds
Searching
Finding storeMoonstone Blue
QuietComfort Ultra Earbuds
Searching
Finding storeWhite Smoke
QuietComfort Ultra Earbuds
Searching
Finding store
Devialet Gemini II True Wireless
Bose QuietComfort Ultra Earbuds Truly Wireless
Comments
Devialet Gemini II True Wireless vs Bose QuietComfort Ultra Earbuds Truly Wireless: Main Discussion
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