Sennheiser CX 400BT

7.2

/ 10

Specifications

Impedance

16 Ω

Sensitivity

106 dB/mW

Type

True Wireless

Amp required

Not necessary

Score by configuration

No amplifier

6.1

Portable amp

6.6

Desktop amp

7.2

Max score assumes optimal full audio chain.

Analysis

The Sennheiser CX 400BT is a mid range true wireless with 16Ω impedance and 106dB sensitivity. At 16Ω, these headphones drive well from most phones and computers without needing an external amplifier.

Your audio source matters more than most people think. Spotify High Quality is fine for casual listening, but with FLAC files or lossless services like Apple Music or TIDAL you'll hear a clear improvement — especially with mid range headphones like these.

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