Sennheiser HD 660 S vs AKG K712 PRO

Sennheiser HD 660 S review
vs
AKG K712 PRO review

How about comparing two open back headphones? AKG K712 PRO vs Sennheiser HD 660 S has an extraordinary design. But what makes them similar is an over-ear wearing style and an audio cable that comes with both of them.

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Features

The sensitivity of these headphones is almost identical since Sennheiser HD 660 S has 104 dB and the other device`s rate is 105 dB. When it comes to sound detail, frequency response matters most. In the case with AKG K712 PRO it is 10 Hz - 40 kHz and Sennheiser HD 660 S works in a range from 9 Hz to 41.5 kHz. There is also a dramatic difference between their impedance. The appliance made by Sennheiser has 150 Ohm, while AKG K712 PRO has 62 Ohm.

Sound

The sound of Sennheiser HD 660 S can best be described as balanced and resolving. Its bass is not ear-rumbling but really good. The voices and instruments are clearly contoured and naturally reproduced. Due to the lack of noise-canceling, you will hear all the sounds that surround you and people in public places will hear your music as well.

AKG K712 PRO has an accurate treble and tight bass. Its soundstage is super wide. The mids sound incredibly natural, they are full-bodied and not tinny at all.

Comfort and design

Let's talk about the weight first. Probably, holding these devices in hand you will not feel any difference, as AKG K712 PRO and Sennheiser HD 660 S weigh 235 g and 260 g respectively.

Both of them have an adjustable headband and an audio cable with 300cm length. Only AKG K712 PRO comes with a premium carry case. Its “hammock” headband is made out of leather and should not wear out too fast. Consider, that the earpads are plush and exert little pressure on the ears.

Sennheiser HD 660 S pros and cons

Sennheiser HD 660 S pros and cons

Pros

  • The sound is clean and crisp
  • Great for extended listening without getting fatigued
  • 4.4mm TRRRS cable included
  • The design looks more solid compared to previous models

Cons

  • Narrow soundstage

AKG K712 PRO pros and cons

AKG K712 PRO pros and cons

Pros

  • The headband made of natural leather for a lightweight and comfortable fit
  • Perfect for people who wear glasses
  • All of the important mechanical details are either metal or durable plastic

Cons

  • You probably should buy an AMP for a good sound
  • Upper mids have a severe dip

Votes 2 2
Rating 1 1

Headphones comparison chart

Overall
Sennheiser HD 660 S
8
AKG K712 PRO
7.5
7
7
AKG K712 PRO

AKG K712 PRO review

Jun 09, 2020

I will start my review of AKG K712 PRO headphones with the fact that they are the product of Austria...

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Common

Product

Sennheiser HD 660 S
AKG K712 PRO

Model

HD 660 S
K712 PRO

Brand

Sennheiser
AKG

Reviews

181
2692

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
62

Frequency response, Hz

9Hz-41.5KHz
10Hz-40KHz

Total harmonic distortion (THD), %

0.04

Sensitivity (SPL), dB

104
105

Magnet type

Weight (headphones), g/oz

260/9.1
235/8.3

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
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
AKG K712 PRO
Sennheiser HD 660 S
AKG K712 PRO

Headphones HeadphonesArena comparison rating

  • better
  • worse
  • 8
  • 7.5
  • 8Sennheiser HD 660 S
  • 7.5AKG K712 PRO

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