Sennheiser HD 660 S vs HIFIMAN SUNDARA

Sennheiser HD 660 S review
vs
HIFIMAN SUNDARA review

Wired headphones Sennheiser HD 660 S vs HIFIMAN SUNDARA look completely different, although they both are open back and over-ear. But here I will show you plenty of other distinction which I have found out.

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Features

The frequency response always says a lot about headphones, therefore we'll begin with this feature. The range of Sennheiser HD 660 S sound starts from 9 Hz and ends on 41.5 kHz. HIFIMAN SUNDARA headphones have a much wider frequency response — from 6 Hz to 75 kHz. Their sensitivity is 10 dB different since the first device has 104 dB and the second one — 94 dB.

Sound

Usually, open back headphones do not have noise canceling and these two are not an exception. The soundstage of HIFIMAN SUNDARA is wide, even more amazingly very open and contain so much detail. The bass is pretty flat, with a slight boost in mid-bass, using these headphones you can feel some slam when needed to.

The overall soundstage of the Sennheiser HD 660 S is open, airy and clean in nature with plenty of room for maneuver. The music sounds very natural in the middle frequencies, and the headphones give a very impressive sound in general.

Comfort and design

Let's take a look at how heavy the compared by me headphones are. Sennheiser HD 660 S has 260 g, while the weight of HIFIMAN SUNDARA is 372 g. Both of them have a detachable cable but do not have a built-in microphone.

A wire HIFIMAN SUNDARA vs Sennheiser HD 660 S has a 150cm long wire and it is twice longer than an audio cable that comes with the other appliance — 300cm. Both headphones are big, bulky, not meant for outdoor use.

Sennheiser HD 660 S pros and cons

Sennheiser HD 660 S pros and cons

Pros

  • Fit is quite tight on the head — you can make very few movements without fear that it will fall
  • Quite a sturdy carrying case
  • The earpad material is incredibly soft and it allows you to have excellent overall comfort

Cons

  • It might be a bit difficult to find good replacement wires that are shorter, as original ones are long

HIFIMAN SUNDARA pros and cons

HIFIMAN SUNDARA pros and cons

Pros

  • Well-balanced signature
  • The faux leather headband is very wide, distributing the weight of the headphones over a large area to avoid the formation of hotspots
  • Has a almost entirely metal design that feels durable and premium

Cons

  • Mediocre sub-bass extension
  • The ear cups do not pivot

Votes 1 1
Rating 5 5

Headphones comparison chart

Overall
Sennheiser HD 660 S
8
HIFIMAN SUNDARA
8
7
7
HIFIMAN SUNDARA

HIFIMAN SUNDARA review

May 27, 2020

HiFiMan Sundara is a great choice for critical listening and is intended for professional use mostly...

Read More
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Common

Product

Sennheiser HD 660 S
HIFIMAN SUNDARA

Model

HD 660 S
SUNDARA

Brand

Sennheiser
HIFIMAN

Reviews

170
160

General

Wearing style

over ear
over ear

Enclosure

open back
open back

Wireless

Wired

Specifications

Transducer

dynamic
planar magnetic

Driver size, mm/inches

Impedance, Ohm

150
37

Frequency response, Hz

9Hz-41.5KHz
6Hz-75KHz

Total harmonic distortion (THD), %

0.04

Sensitivity (SPL), dB

104
94

Magnet type

Weight (headphones), g/oz

260/9.1
372/13.1

Comfort

Adjustable headband

Foldable

Noise cancelling

Active noise cancelling

Adjustable noise cancelling level

Microphone

Built-in microphone

In-line microphone

Detachable microphone

Cables

Detachable cable

Audio cable length, cm/ft

300/9.8
150/4.9

Jack connection (TRS)

6.35
3.5

Balanced connection

Control

Built-in control buttons

In-line control

Touch control

Voice control

App control

Control functions

Wireless connectivity

Bluetooth

has not
has not

Bluetooth version

has not
has not

aptX

has not
has not

aptX HD (Hi-Res Audio)

has not
has not

Bluetooth profiles

has not
has not

NFC

Wi-Fi

Battery

Battery type

has not
has not

Battery life, hrs

has not
has not

Charging time, hrs

has not
has not

Charging port

has not
has not

Charging cable

has not
has not

Speed charge

has not
has not

Battery free listening mode

has not
has not

Battery level indicator

has not
has not

Additional features

Water resistance

Light indication

Additional audio features

In the box

Audio cable

Carry case

Charging cable

has not
has not

1/4 Adapter (6,35 mm)

Interchangeable ear pads

User manual

Manual

Sennheiser HD 660 S
HIFIMAN SUNDARA
Sennheiser HD 660 S
HIFIMAN SUNDARA

Headphones HeadphonesArena comparison rating

  • better
  • worse
  • 8
  • 8
  • 8Sennheiser HD 660 S
  • 8HIFIMAN SUNDARA

The Sennheiser HD 660 S is better headphones in this comparison. Check Sennheiser HD 660 S price