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  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Style
    2. Comfort
    3. Controls
    4. Breathability
    5. Portability
    6. Case
    7. Build Quality
    8. Stability
    9. Headshots 1
    10. Headshots 2
    11. Top
    12. In The Box
  5. Sound
    1. Sound Profile
    2. Frequency Response Consistency
    3. Raw Frequency Response
    4. Bass Profile: Target Compliance
    5. Mid-Range Profile: Target Compliance
    6. Treble Profile: Target Compliance
    7. Peaks/Dips
    8. Imaging
    9. Passive Soundstage
    10. Virtual Soundstage
    11. Weighted Harmonic Distortion
    12. Test Settings
  6. Isolation
    1. Noise Isolation - Full Range
    2. Noise Isolation - Common Scenarios
    3. Noise Isolation - Voice Handling
    4. ANC Wind Handling
    5. Leakage
  7. Microphone
    1. Microphone Style
    2. Recording Quality
    3. Noise Handling
  8. Active Features
    1. Battery
    2. App Support
  9. Connectivity
    1. Wired Connection
    2. Bluetooth Connection
    3. Wireless Connection (Dongle)
    4. PC Compatibility
    5. PlayStation Compatibility
    6. Xbox Compatibility
    7. Base/Dock
  10. Comments

Bose QuietComfort Earbuds II Truly Wireless vs Bose QuietComfort Ultra Earbuds Truly Wireless

Side-by-Side Comparison

Products

Bose QuietComfort Earbuds II Truly Wireless
Bose QuietComfort Ultra Earbuds Truly Wireless

Tested using Methodology v1.8

Updated Jan 21, 2025 08:51 PM

SEE PRICE
Amazon.com

Tested using Methodology v1.8

Updated Feb 13, 2025 12:15 AM

SEE PRICE
Amazon.com
Bose QuietComfort Earbuds II Truly Wireless Picture
Bose QuietComfort Ultra Earbuds Truly Wireless Picture

Variants

  • QuietComfort Earbuds II (Eclipse Gray)
  • QuietComfort Earbuds II (Midnight Blue)
  • QuietComfort Earbuds II (Soapstone)
  • QuietComfort Earbuds II (Triple Black)
  • QuietComfort Ultra Earbuds (Black)
  • QuietComfort Ultra Earbuds (Moonstone Blue)
  • QuietComfort Ultra Earbuds (White Smoke)

Our Verdict

Bose QuietComfort Earbuds II Truly Wireless

Bose QuietComfort Ultra Earbuds Truly Wireless

The Bose QuietComfort Ultra Earbuds are the next generation of the Bose QuietComfort Earbuds II Truly Wireless. That said, the differences between them are fairly minimal. Both buds share a similar sound profile that you can further tweak via the Bose Music app, and they're both equipped with Bose's excellent ANC technology. The QuietComfort Ultra are equipped with Bose's new Immersive Audio feature, though, which can help offset the poor passive soundstage performance that's commonplace with in-ear designs.

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Eclipse Gray
QuietComfort Earbuds II
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Black
QuietComfort Ultra Earbuds
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Midnight Blue
QuietComfort Earbuds II
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Moonstone Blue
QuietComfort Ultra Earbuds
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Soapstone
QuietComfort Earbuds II
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White Smoke
QuietComfort Ultra Earbuds
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Triple Black
QuietComfort Earbuds II
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Main Differences for

Threshold 

0.10

Neutral Sound 

7.4
7.0

Mid-Range Profile: Target Compliance 
 

9.4
8.2

Bass Profile: Target Compliance 
 

8.0
7.5

Full Comparison

Design

Style  

Design Picture 2  

Bose QuietComfort Earbuds II Truly Wireless Design Picture 2
Bose QuietComfort Ultra Earbuds Truly Wireless Design Picture 2

Type  

Earbuds
Earbuds

Enclosure  

Closed-Back
Closed-Back

Wireless  

Truly Wireless
Truly Wireless

Transducer  

Dynamic
Dynamic

Show text

Comfort 
 

8.0
8.0

Comfort Picture  

Bose QuietComfort Earbuds II Truly Wireless Comfort Picture
Bose QuietComfort Ultra Earbuds Truly Wireless Comfort Picture

Weight  

0.03 lbs
0.03 lbs

Clamping Force 
 

0 lbs
0 lbs

Show text

Controls 
 

7.7
7.7

Controls Picture  

Bose QuietComfort Earbuds II Truly Wireless Controls Picture
Bose QuietComfort Ultra Earbuds Truly Wireless Controls Picture

OS Compatibility 
 

Not OS specific
Not OS specific

Ease Of Use  

Good
Good

Feedback  

Good
Good

Call/Music Control  

Yes
Yes

Volume Control  

Yes
Yes

Microphone Control  

No
No

Channel Mixing 
 

No
No

Noise Cancelling Control  

Presets
Presets

Talk-Through 
 

On/Off
On/Off

Additional Controls  

Voice Assistant
Voice Assistant

Show text

Breathability 
 

Breathability After Picture  

Avg.Temp.Difference  

Portability 
 

9.4
9.5

Portability Picture  

Bose QuietComfort Earbuds II Truly Wireless Portability Picture
Bose QuietComfort Ultra Earbuds Truly Wireless Portability Picture

 

1.0" (2.6 cm)
1.0" (2.5 cm)

 

1.3" (3.4 cm)
1.6" (4.0 cm)

 

1.1" (2.8 cm)
0.8" (2.0 cm)

Volume  

1.45 in³ (23.70 cm³)
1.22 in³ (20.00 cm³)

Transmitter Required  

No
No

Show text

Case 
 

7.5
7.5

Case Picture  

Bose QuietComfort Earbuds II Truly Wireless Case Picture
Bose QuietComfort Ultra Earbuds Truly Wireless Case Picture

Type  

Hard case
Hard case

 

2.6" (6.6 cm)
2.3" (5.9 cm)

 

2.3" (5.9 cm)
2.1" (5.3 cm)

 

1.1" (2.7 cm)
1.1" (2.7 cm)

Volume  

6.36 in³ (104.20 cm³)
5.16 in³ (84.50 cm³)

Show text

Build Quality 
 

7.5
7.5

Build Quality Picture  

Bose QuietComfort Earbuds II Truly Wireless Build Quality Picture
Bose QuietComfort Ultra Earbuds Truly Wireless Build Quality Picture

Show text

Stability 
 

8.0
8.0

Stability Picture  

Bose QuietComfort Earbuds II Truly Wireless Stability Picture
Bose QuietComfort Ultra Earbuds Truly Wireless Stability Picture

Show text

Headshots 1  

Angled Picture  

Bose QuietComfort Earbuds II Truly Wireless Angled Picture
Bose QuietComfort Ultra Earbuds Truly Wireless Angled Picture

Side Picture  

Bose QuietComfort Earbuds II Truly Wireless Side Picture
Bose QuietComfort Ultra Earbuds Truly Wireless Side Picture

Headshots 2  

Front Picture  

Bose QuietComfort Earbuds II Truly Wireless Front Picture
Bose QuietComfort Ultra Earbuds Truly Wireless Front Picture

Rear Picture  

Bose QuietComfort Earbuds II Truly Wireless Rear Picture
Bose QuietComfort Ultra Earbuds Truly Wireless Rear Picture

Top  

Top Picture  

Bose QuietComfort Earbuds II Truly Wireless Top Picture
Bose QuietComfort Ultra Earbuds Truly Wireless Top Picture

In The Box  

In The Box Picture  

Bose QuietComfort Earbuds II Truly Wireless In The Box Picture
Bose QuietComfort Ultra Earbuds Truly Wireless In The Box Picture

Show text

Sound

Sound Profile 
 

Sound Profile  

See details on graph tool
See details on graph tool

Normalization Frequency 
 

450 Hz
700 Hz

Bass Amount 
 

4.0 dB
5.1 dB

Treble Amount 
 

1.4 dB
0.0 dB

Show text

Frequency Response Consistency 
 

9.4
8.3

Consistency L  

See details on graph tool
See details on graph tool

Consistency R  

See details on graph tool
See details on graph tool

Avg. Std. Deviation 
 

0.12 dB
0.33 dB

Show text

Raw Frequency Response 
 

Raw FR L  

See details on graph tool
See details on graph tool

Raw FR R  

See details on graph tool
See details on graph tool

Bass Profile: Target Compliance 
 

8.0
7.5

Bass Profile: Target Compliance  

See details on graph tool
See details on graph tool

RMS Deviation From Target 
 

4.3 dB
5.3 dB

Low-Frequency Extension 
 

20 Hz
20 Hz

Low Bass 
 

5.58 dB
6.67 dB

Mid Bass 
 

3.21 dB
4.84 dB

High Bass 
 

2.18 dB
2.86 dB

Show text

Mid-Range Profile: Target Compliance 
 

9.4
8.2

Mid-Range Profile: Target Compliance  

See details on graph tool
See details on graph tool

RMS Deviation From Target 
 

0.79 dB
1.78 dB

Low Mid 
 

0.79 dB
1.85 dB

Mid-Mid 
 

0.2 dB
-0.8 dB

High Mid 
 

0.22 dB
0.06 dB

Show text

Treble Profile: Target Compliance 
 

7.5
7.3

Treble Profile: Target Compliance  

See details on graph tool
See details on graph tool

RMS Deviation From Target 
 

2.89 dB
3.07 dB

Low Treble 
 

3.12 dB
1.88 dB

Mid Treble 
 

-0.87 dB
-2.4 dB

High Treble 
 

-6.58 dB
-8.6 dB

Show text

Peaks/Dips 
 

7.4
7.2

Peaks/Dips Graph 
 

See details on graph tool
See details on graph tool

Peaks 
 

1.24 dB
1.43 dB

Dips 
 

2.55 dB
2.49 dB

Show text

Imaging 
 

8.7
9.1

Group Delay  

See details on graph tool
See details on graph tool

Phase Response Mismatch  

See details on graph tool
See details on graph tool

Weighted Group Delay 
 

0.23
0.23

Weighted Phase Mismatch 
 

4.91
2.93

Weighted Amplitude Mismatch 
 

0.98
0.24

Weighted Frequency Mismatch 
 

0.92
1.31

Show text

Passive Soundstage 
 

0.8
0.8

PRTF  

Bose QuietComfort Earbuds II Truly Wireless PRTF
Bose QuietComfort Ultra Earbuds Truly Wireless PRTF

PRTF Accuracy (Std. Dev.) 
 

N/A
N/A

PRTF Size (Avg.) 
 

N/A
N/A

PRTF Distance 
 

N/A
N/A

Openness 
 

0.5
0.9

Acoustic Space Excitation 
 

2.2
2.2

Show text

Virtual Soundstage 
 

0.0
3.3

Virtual Soundstage  

Bose QuietComfort Earbuds II Truly Wireless Virtual Soundstage
Bose QuietComfort Ultra Earbuds Truly Wireless Virtual Soundstage

Head Modeling 
 

No
No

Speaker Modeling 
 

No
On/Off

Room Ambience 
 

No
No

Head Tracking 
 

No
Adjustable

Virtual Surround 
 

No
No

Show text

Weighted Harmonic Distortion 
 

7.9
8.1

Weighted Harmonic Distortion  

See details on graph tool
See details on graph tool

WHD @ 90 
 

0.268
0.238

WHD @ 100 
 

0.099
0.084

Show text

Test Settings 
 

Firmware 
 

1.3.26
4.0.20

Power 
 

On
On

Connection 
 

Bluetooth
Bluetooth 5.3

Codec 
 

SBC, 16-bit, 48kHz
SBC, 16-bit, 48kHz

Test Instrument  

Audio Precision APx517B
TP-Link BE9300 BT 5.4

EQ 
 

No EQ
No EQ

ANC 
 

Maximum
Quiet

Tip/Pad 
 

Silicone (small)
Silicone (small)

Microphone 
 

Integrated
Integrated

Show text

Isolation

Noise Isolation - Full Range 
 

8.4
8.5

Noise Isolation - Full Range Graph  

See details on graph tool
See details on graph tool

Noise Cancelling  

Yes
Yes

Overall Attenuation 
 

-21.99 dB
-22.39 dB

Bass 
 

-19.38 dB
-22.03 dB

Mid 
 

-20.79 dB
-19.97 dB

Treble 
 

-26.49 dB
-25.51 dB

Show text

Noise Isolation - Common Scenarios 
 

8.5
8.7

Noise Isolation - Common Scenarios Graph  

See details on graph tool
See details on graph tool

Airplane Noise Attenuation 
 

-19.91 dB
-20.15 dB

Airplane Noise Isolation Audio 
 

Office Noise Attenuation 
 

-19.03 dB
-19.44 dB

Office Noise Isolation Audio 
 

Street Noise Attenuation 
 

-21.81 dB
-22.06 dB

Street Noise Isolation Audio 
 

Show text

Noise Isolation - Voice Handling 
 

Female Voice 1 
 

Male Voice 1 
 

Female Voice 2 
 

Male Voice 2 
 

ANC Wind Handling 
 

ANC Wind Handling Graph  

See details on graph tool
See details on graph tool

ANC Wind Noise 
 

Show text

Leakage 
 

8.1
8.1

Leakage  

See details on graph tool
See details on graph tool

Leakage Audio 
 

Overall Leakage @ 1ft 
 

33.04 dB
32.75 dB

Show text

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  

See details on graph tool
See details on graph tool

Recorded Speech 
 

LFE 
 

369.71 Hz
459.13 Hz

FR Std. Dev. 
 

3.69 dB
3.63 dB

HFE 
 

3,568.48 Hz
3,673.05 Hz

Weighted THD 
 

0.437
0.149

Gain 
 

18.7 dB
34.39 dB

Show text

Noise Handling 
 

4.3
4.3

SpNR  

See details on graph tool
See details on graph tool

SpNR 
 

40.21 dB
29.17 dB

Noise Gate 
 

Always On
Always On

Speech + Pink Noise Handling 
 

4.5
4.5

Speech + Pink Noise Audio Sample  

Speech + Subway Noise Handling 
 

4.0
4.0

Speech + Subway Noise Audio Sample  

Show text

Active Features

Battery 
 

7.1
7.2

Battery Type 
 

Rechargable
Rechargable

Continuous Battery Life 
 

6.7 hrs
7 hrs

Additional Charges 
 

3.0
3.0

Total Battery Life 
 

26.8 hrs
28 hrs

Charge Time 
 

1 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

Show text

App Support 
 

8.0
8.0

App Picture  

Bose QuietComfort Earbuds II Truly Wireless App Picture
Bose QuietComfort Ultra Earbuds Truly Wireless App Picture

App Name  

Bose Music
Bose Music

iOS  

Yes
Yes

Android  

Yes
Yes

macOS  

No
No

Windows  

No
No

Equalizer 
 

Graphic + Presets
Graphic + Presets

ANC Control 
 

Presets
Presets

Mic Control  

No
No

Room Effects 
 

No
Yes

Playback Control 
 

Yes
Yes

Button Mapping  

Yes
Yes

Surround Support 
 

No
No

Show text

Connectivity

Wired Connection 
 

0.0
0.0

Cable Picture  

Bose QuietComfort Earbuds II Truly Wireless Cable Picture
Bose QuietComfort Ultra Earbuds Truly Wireless 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

Show text

Bluetooth Connection 
 

7.5
7.6

Bluetooth Version 
 

5.3
5.3

Multi-Device Pairing 
 

No
2 Devices

Quick Pair (Android) 
 

No
Yes

Quick Pair (iOS) 
 

No
No

Line Of Sight Range 
 

316.60 ft (96.50 m)
334.65 ft (102.00 m)

Latency - SBC 
 

255 ms
292 ms

Latency - aptX 
 

N/A
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  

SBC
aptX Adaptive (Low Latency)

AAC Support 
 

Yes
Yes

Show text

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

Show text

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 
 

0.4
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 
 

No
No

Power Supply 
 

USB-C
USB-C

Show text

Check Price

Eclipse Gray
QuietComfort Earbuds II
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Finding store
Black
QuietComfort Ultra Earbuds
Searching
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Midnight Blue
QuietComfort Earbuds II
Searching
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Moonstone Blue
QuietComfort Ultra Earbuds
Searching
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Soapstone
QuietComfort Earbuds II
Searching
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White Smoke
QuietComfort Ultra Earbuds
Searching
Finding store
Triple Black
QuietComfort Earbuds II
Searching
Finding store
 

Bose QuietComfort Earbuds II Truly Wireless

Bose QuietComfort Ultra Earbuds Truly Wireless

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