Sennheiser HD 660 S vs Beyerdynamic DT 990 Pro

Sennheiser HD 660 S
vs
Beyerdynamic DT 990 Pro

We compared Sennheiser HD 660 S to Beyerdynamic DT 990 Pro headphones based on looks, sound, performance, and tech. Based on our rating, HD 660 S has a total rating of 8 out of 10 vs 7 out of 10 for DT 990 Pro.

Advantages Sennheiser HD 660 S over Beyerdynamic DT 990 Pro

  • Better high limit of frequency response: 41.5KHz vs 35KHz
  • Higher sensitivity: 104dB vs 96dB
  • Less weight: 9.1oz vs 12.6oz
  • Detachable cables

Advantages Beyerdynamic DT 990 Pro over Sennheiser HD 660 S

  • Better low limit of frequency response: 5Hz vs 9Hz
Votes 1 1
Rating 5 5

Headphones comparison chart

Overall
Sennheiser HD 660 S
8
Beyerdynamic DT 990 Pro
7
7
6
Beyerdynamic DT 990 Pro

Beyerdynamic DT 990 Pro review

May 18, 2020

This Beyerdynamic DT 990 Pro review includes the information about features and my own impression of...

Read More
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Common

Product

Sennheiser HD 660 S
Beyerdynamic DT 990 Pro

Model

HD 660 S
DT 990 Pro

Brand

Sennheiser
Beyerdynamic

Reviews

226
5732

General

Wearing style

over ear
over ear

Enclosure

open back
open back

Wireless

Wired

Specifications

Transducer

dynamic
dynamic

Driver size, mm/inches

Impedance, Ohm

150
80, 250

Frequency response, Hz

9Hz-41.5KHz
5Hz-35KHz

Total harmonic distortion (THD), %

0.04
0.2

Sensitivity (SPL), dB

104
96

Magnet type

Weight (headphones), g/oz

260/9.1
360/12.6

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
300/9.8

Jack connection (TRS)

6.35
6.35

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
Beyerdynamic DT 990 Pro
Sennheiser HD 660 S
Beyerdynamic DT 990 Pro

Headphones HeadphonesArena comparison rating

  • better
  • worse
  • 8
  • 7
  • 8Sennheiser HD 660 S
  • 7Beyerdynamic DT 990 Pro

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