HD 650

Released 2003

The HD 650 are Sennheiser's open-back headphones from the HD 600 series with a warmer tuning than the HD 600, suited to home listeners with a headphone amplifier.

Type: Over-ear
Noise cancelling: No
Battery: –
With case: –
Best codec: Wired
Weight: 260 g

Over-ear

What reviewers say

Reviewers agree the sound is detailed and clear, with full but unexaggerated bass, and that the headphones stay comfortable over long sessions. SoundGuys found the sub-bass rolls off, TechRadar heard slight colouration in the treble and found them warm on the ears, and RTINGS noted they block no noise and leak a lot, suiting quiet rooms only.

From soundguys.com, techradar.com and rtings.com

Specifications

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Sound

Type: Over-ear
Noise cancelling: No
Back: Open
Impedance: 300 ohms
Bluetooth codecs: None (wired)
Drivers: Dynamic, diffuse-field equalised; 10 – 41,000 Hz (–10 dB); 103 dB SPL at 1 kHz (1 Vrms); THD ≤ 0.05% (1 kHz, 1 Vrms); long-term input power max. 500 mW (EN 60-268-7)

Battery

Listening time (maker's claim): No battery (wired)

Design

Weight: 260 g
Headphone cable: Yes
Fit and ear tips: Circumaural, open-back; contact pressure approx. 6.0 N
Works with: Detachable 3 m oxygen-free copper cable with 6.35 mm plug; 6.35 mm to 3.5 mm adapter