Sennheiser HD660s V2

Sennheiser HD660s is a new improved headphone, based on the HD650 (and the still good but older hd580/600). The HD660s is easier to drive, better matching the more portable sources we are all using nowadays, with both a slightly higher sensitivity and a much lower impedance of 150 ohms. Sound quality is more open with improved clarity and a really clean, smooth mid-range. 

HD660s are very light weight, at 260g, with deep velour pads for great comfort. There are now two cables included - one with 6.5mm plug & a 3.5mm adaptor. The second a new style 4.4mm balanced pentaconn connector that is showing up on plenty of portable and desktop amps. If you need an xlr plug, just add an 4.4 - xlr adaptor in the accessories section.

The new iFi line of dacs and amps are great value and include a balanced amp to match with the HD660s & included 4.4mm balanced cable. Also sounds great with the new Hifiman EF400 dac/amp, which has 4.4mm output.

Sennheiser HD660s measurements:

  • Impedance: 150 ohm
  • Sensitivity: 104dB
  • Frequency Response: 10 - 41,000 Hz
  • THD: 0.04%
  • HD660s Cables: 3m, 6.5mm plug and 4.4mm plug cables included
  • 6.5mm - 3.5mm adaptor included
  • 2 years warranty

 

Customer Reviews
5.0 Based on 7 Reviews
5 ★
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  • HD800
01/30/2023

Sennheiser HD660s V2 review

Great sound and very comfortable headphones.

MB
Mark B.
Canada
01/13/2023

Very good for the price.

They sound much better than my ancient HD560 Ovation ii. More bass and a warmer sound. Not quite as open as my HD800 but are easier to drive with the HiBy portable player. The fit is firmer than either of the older two. Not uncomfortable but no worries about falling off your head either. The HD800s are much looser and heavier. No regrets!

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Andrew D.
Canada Canada
07/18/2022

Excellent Service

I just checked my email and my first purchase from Headphone Bar was back in 2014. My experience has always been 5 stars every time and I will for sure order again in the future. My only complain is that Headphone Bar did not open a store in Calgary! : )

A
Anonymous
Canada Canada
01/29/2022

excellent sales and service

great experience and price!!

A
Anonymous
Canada Canada
07/06/2021

Good product. Fast shipping

Very good sound nice product

DL
Danny L.
Canada Canada