A pair of preowned Sennheiser HD 650 Reference Class open-back headphones, featuring a coiled cable and instruction manual, are neatly arranged inside an open, foam-padded box—making them an ideal option for any audiophile.
A pair of preowned Sennheiser HD 650 Reference Class headphones, featuring an open-back black design with a coiled cable and adapter, are displayed in a foam-lined case on a grey carpeted surface.
Sennheiser HD 650 box front - Reference Class
Sennheiser HD 650 box label showing UPC and serial number
A closed box of Sennheiser HD 650 Reference Class Headphones - Preowned by Sennheiser is displayed on a gray carpeted surface.
A pair of preowned Sennheiser HD 650 Reference Class open-back headphones, featuring a coiled cable and instruction manual, are neatly arranged inside an open, foam-padded box—making them an ideal option for any audiophile.
A pair of preowned Sennheiser HD 650 Reference Class headphones, featuring an open-back black design with a coiled cable and adapter, are displayed in a foam-lined case on a grey carpeted surface.
Sennheiser HD 650 box front - Reference Class
Sennheiser HD 650 box label showing UPC and serial number
A closed box of Sennheiser HD 650 Reference Class Headphones - Preowned by Sennheiser is displayed on a gray carpeted surface.

Sennheiser HD 650 Reference Class Headphones - Preowned

$329.00

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Sennheiser HD 650 – Reference Class Open-Back Headphones

Imagine sitting in the sweet spot of a world-class recording studio, every nuance of the music revealing itself with stunning clarity. That's the experience the Sennheiser HD 650 delivers – and this preowned unit in excellent condition lets you get there without the new price tag.

The HD 650 is widely regarded as one of the finest headphones ever made for critical listening, studio monitoring, and audiophile enjoyment. Its open-back design creates a natural, spacious soundstage that closed-back headphones simply can't match.

Condition

Preowned – Excellent. This unit shows minimal signs of use and is in full working order. Made in Ireland.

Key Features

  • Open-back, circumaural design for natural, spacious sound
  • Reference-class transducers for accurate, detailed reproduction
  • Low distortion across the full frequency range
  • Lightweight aluminum voice coils for fast transient response
  • Detachable, replaceable cable
  • Comfortable velour ear pads
  • Made in Ireland

Specifications

  • Transducer type: Dynamic, open
  • Frequency response: 10 – 41,000 Hz
  • Impedance: 300 Ω
  • SPL: 103 dB
  • THD: < 0.05% (1 kHz, 1 Vrms)
  • Contact pressure: ~2.5 N
  • Cable length: 3 m
  • Connector: 6.35 mm (¼") stereo jack
  • Weight: 260 g (without cable)

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