Audio Technica ATH-TWX9MK2 vs Bose QuietComfort Ultra Earbuds (2nd Gen)

What ATH-TWX9MK2 does better (4) and where QuietComfort Ultra Earbuds (2nd Gen) wins (1) — every spec side by side.

Audio Technica · 2025ATH-TWX9MK2

6.1Score

4 advantages≈ $160

Higher score

4.8Score

1 advantage≈ $230

7.2Noise control & calls5.5

3.8Battery3.7

4.2Build & features2.3

Why is ATH-TWX9MK2 better than QuietComfort Ultra Earbuds (2nd Gen)?

Hi-res codec (LDAC / aptX HD / LHDC)Yes · QuietComfort Ultra Earbuds (2nd Gen): No
Battery life6.5 h vs 6 h+8%
Battery life with ANC6 h vs 4 h+50%
Earbud weight (each)5.5 g vs 10 g+82%

Specifications

Only differences	Audio Technica ATH-TWX9MK2≈ $1606.1	Bose QuietComfort Ultra Earbuds (2nd Gen)≈ $2304.8
Sound
Fit	In-ear	In-ear
Ear cup design	—	Closed-back
Driver type	Dynamic	Dynamic
Driver size	5.8 mm	—
Lowest frequency	10 Hz	—
Highest frequency	40,000 Hz	—
Impedance	16 Ω	—
Sensitivity	105 dB	—
Spatial / 3D audio	—	Yes
Hi-Res Audio	Yes	Yes
Adjustable equaliser	Yes	Yes
Noise control
Active noise cancelling	Yes	Yes
Adaptive ANC	—	Yes
Transparency / ambient mode	Yes	Yes
Microphones	—	4
Battery & charging
Battery life	6.5 h	6 h
Battery life with ANC	6 h	4 h
Total with charging case	—	24 h
Charging time	2.5 h	1 h
Fast charging support	—	Yes
Wireless charging (case)	Yes	Yes
Connectivity
Wireless	Yes	Yes
Bluetooth version	5.2	5.3
Bluetooth codecs	aptX Adaptive, aptX, AAC, SBC	aptX
Hi-res codec (LDAC / aptX HD / LHDC)	Yes	No
aptX	Yes	Yes
LDAC	No	No
Multipoint (two devices)	Yes	Yes
USB-C	Yes	Yes
Smart & streaming
Companion app	—	Yes
Design & build
Earbud weight (each)	5.5 g	10 g
Protection rating	IPX4	IPX4
Water resistance (IPx)	IPx4	IPx4
Features
Touch controls	Yes	Yes
Hands-free calls	Yes	Yes