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Over-earReference

Sennheiser HD 820

8.7
/ 10

Specifications

Impedance
75 Ω
Sensitivity
96 dB/mW
Type
Over-ear
Amp required
Not necessary

Score by configuration

No amplifier
7.4
Portable amp
8
Desktop amp
8.7

Max score assumes optimal full audio chain.

Analysis

The Sennheiser HD 820 is a reference over-ear with 75Ω impedance and 96dB sensitivity. At 75Ω, 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 reference headphones like these.

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