Sennheiser CX True Wireless vs Soundcore Space A40

What CX True Wireless does better (1) and where Space A40 wins (4) — every spec side by side.

Sennheiser · 2021CX True Wireless

4.5Score

1 advantage≈ $95

Soundcore · 2022Space A40

6.9Score

4 advantages≈ $85

Higher score

3.0Noise control & calls4.9

5.9Battery7.9

Why is CX True Wireless better than Space A40?

Specifications

Only differences	Sennheiser CX True Wireless≈ $954.5	Soundcore Space A40≈ $856.9
Sound
Fit	In-ear	In-ear
Ear cup design	Closed-back	Closed-back
Driver type	Dynamic	Dynamic
Driver size	—	10 mm
Lowest frequency	—	20 Hz
Highest frequency	—	40,000 Hz
Impedance	—	16 Ω
Sensitivity	—	104 dB
Hi-Res Audio	—	Yes
Adjustable equaliser	Yes	Yes
Noise control
Active noise cancelling	No	No
Transparency / ambient mode	—	Yes
Microphones	—	6
Noise reduction for calls	—	Yes
Battery & charging
Battery life	9 h	10 h
Total with charging case	27 h	50 h
Charging time	—	2 h
Quick charge (claimed)	—	10 min → 4 h
Fast charging support	Yes	Yes
Wireless charging (case)	—	Yes
Connectivity
Wireless	Yes	Yes
Bluetooth version	5.1	5.2
Bluetooth codecs	aptX, AAC, SBC	LDAC, AAC, SBC
Hi-res codec (LDAC / aptX HD / LHDC)	No	Yes
aptX	Yes	No
LDAC	No	Yes
Multipoint (two devices)	—	Yes
USB-C	Yes	Yes
Smart & streaming
Voice assistant	—	Siri
Companion app	Yes	—
Design & build
Earbud weight (each)	—	4.9 g
Protection rating	IPX4	IPX4
Water resistance (IPx)	IPx4	IPx4
Colours	Black, White	Navy Blue, Black, White, Fresh Green, Purple
Features
Touch controls	Yes	Yes
Hands-free calls	—	Yes