Name: Pro 4AA
Brand: Koss
SKU: 142762
Rating: 4.2 (44 reviews)

4.2

based on all reviews

Consumer ratings:

4.4 / 5

quite decent bass
and very good deep bass
Vocals were more naturally balanced over the Pro4S

The Bottom Line These macho headphones can rock out like pro models
deaf-mutes Click to expand
high freq are pretty rolled off

Impedance: 250 Ω
Frequency range: 10, 25000 Hz
Acoustic design: Closed
Sound output: Stereo
Style: On-Ear
Connectivity technology: Wired

Koss Pro 4AA - Pros & Cons

quite decent bass
and very good deep bass
Vocals were more naturally balanced over the Pro4S
comfortable and attractive
Excellent detailed sound - perfect trebble
great sound at a great price
sound quality is excellent and very clear
a nice neutral sound with deep bass and decent treble
separation and clarity
all natural and organic sound
The open design also allows you to monitor your environment
headband is flexible and easily adjustable
Lightweight and comfortable design Above-average audio reproduction
frequency response consistency is very good
Porta Pro also have a better more durable design
and have a decent open sound
exceptionally well-matched in frequency
mid-range performance is very good
tight bass and a transparent treble reproduction
better-balanced sound and a more comfortable on-ear fit

The Bottom Line These macho headphones can rock out like pro models
deaf-mutes Click to expand
high freq are pretty rolled off
bass was lacking with other tracks that were not bass heavy
Lacks fullness and has poor bass
No where near the phones the 4AAA are
Audio Enthusiast Horrible Build Quality
flimsy and lacking in features
the buttons on the module feel cheap and shallow
The response throughout the range is rather uneven
No cherry-picked units sent by brands
sound noticeably thin and rather lacking in detail

Koss Pro 4AA - Technical Overview

	Poor	Average	Good	Excellent
Impedance	250 Ω Best: Stax SR-L500 Impedance: 145000 Ω
Weight	505 g Best: Cyber Acoustics ACM-7002 Weight: 0.11 g

Koss - Video Reviews (5)

Koss Pro 4AA - Full Specifications

Sound output	Stereo
Style	On-Ear
Connectivity technology	Wired
Headset (integrated/enclosed microphone)	no

Weight	17.81 oz

Inputs supported	6.35mm
Cable length	3
Type of connector	3.5mm

Colour of product	Beige,Black
Acoustic design	Closed
Attachment type	Headband
Body material	Steel
Category	Studio
Foldable	yes
Noise isolating	yes

Impedance	250.0 Ω
Frequency range	10 - 25000
Driver technology	Dynamic
Total harmonic distortion (THD)	0.1 %

Battery operated	no

Koss Pro 4AA - Q&A

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Koss Pro 4AA Koss - Editorial Reviews (4)

4.0

Based on 4 reviews

Koss Pro 4AA Koss Pro4AA Titanium review: Koss Pro4AA Titanium

CNET

Published: 04.09.2003

Koss Pro4AA Titanium review: Koss Pro4AA Titanium

3.5

Koss Pro4AA Titanium

Koss Pro 4AA Koss Pro 4AA Stereo Headphones user reviews : 4.4 out of 5 - 13 reviews - audioreview.com

www.audioreview.com

Published: 17.12.2014

Koss Pro 4AA Stereo Headphones user reviews : 4.4 out of 5 - 13 reviews - audioreview.com

5.0

Koss Pro 4AA Stereo Headphones user reviews : 4.4 out of 5 - 13 reviews - audioreview.com

RTINGS.com

Published: 31.08.2018

Koss Porta Pro KTC Review

3.6

The Koss Porta Pro KTC are decent-sounding and portable on-ear headphones for critical listening and mixed usage. They're lightweight, comfortable, and have a co...