Sennheiser HD660S Headphones

A Direct Connection To Your Music

Known for their engaging signatures and liquid-smooth response, HD 660S predecessors HD 650 and HD 600 shattered performance barriers in the audiophile headphone category.
The HD 660S transcends the best of that storied DNA with supernatural speed and effortless instrument reproduction—even at the bookends of the frequency spectrum. Utilizing an all-new transducer and specially ventilated drive unit, the HD 660S delivers the revealing, tack-sharp detail audiophiles demand without sacrificing the engaging dynamics that make music so enjoyable.

Specifications

Article number (SKU) 508826
Frequency response (speaker) 9 Hz - 41,500 Hz
Sound pressure level (SPL) 104 dB (1 V)
Impedance 150 Ω
Total harmonic distortion (THD) < 0.04% (1 kHz, 100dB)
Cable length 3 m
Adapter stereo jack plug, gold-plated 1/4\ (6.35 mm), unbalanced, 3-pin 4.4 mm, balanced, 5-pin
Transducer principle dynamic, open
Weight 260 g
Connector stereo jack plug, gold-plated 1/4\ (6.35 mm), unbalanced, 3-pin 4.4 mm, balanced, 5-pin
Ear coupling circumaural Magnetic field 4.5 mT

Turnaround

Orders will usually dispatched within 2 working days of receiving cleared payment.

Shipping Rates

We calculate your shipping rate based on the total weight of your items and your delivery address. Standard shipping to the UK Mainland (excludes Northern Ireland, Isle of Man, Channel Islands) is free, except where specifically indicated. Don't worry, you'll always see the final shipping charge displayed before you reach the payment step (on the checkout page).

Carriers

We despatch the bulk of our UK mainland items on a 24 hour service.  Non-Mainland locations – Isle of Man, Isle of Wight, the Scilly Isles, the Scottish highlands and Islands, the Channel Islands and Northern Ireland may take a day or so longer. Smaller items are delivered using Royal Mail 24 or special delivery. Larger items are delivered using a courier service such as UPS and occasionally by a Pallet service.

Order Tracking

If a tracking # is provided by the carrier, we will update your order with the tracking information. Please note that some orders will not have tracking numbers.