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Koss CC_01

alaTest has collected and analyzed 13 reviews of Koss CC_01. The average rating for this product is 2.4/5, compared to an average rating of 4.0/5 for other Headphones for all reviews. Reviewers really like the bass quality. The portability also gets good reviews. Many are negative about the design and price, while there are some mixed comments about the reliability.

portability, bass quality

sound, comfort, price, design

We analyzed user and expert ratings, product age and more factors. Compared to other Headphones the Koss CC_01 is awarded an overall alaScore™ of 73/100 = Good quality.

Review analysis

(Based on 13 reviews)

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User Reviews  

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Consumer review by: ( review summary for Koss CC_01


alaTest has collected and analyzed 3 user reviews of Koss CC_01 from The average user rating for this product is 1.7/5, compared to an average user rating of 4.0/5 for other Headphones on People are impressed by the portability, whereas there are mixed views on the reliability and price. Many are critical about the design and sound.


sound, design

33% of the reviews on give this product a positive rating.

This summary is based on the product: Koss CC01 Custom Fit In-Ear Isolation Headphones for iPod, iPhone, MP3 and Smartphone - Black/Red

Feb, 2016

Expert review by: Tim Gideon (

Koss CC_01


Koss recently made waves by introducing the $149.99 (direct) CC_01, a pair of earphones (though the company call them "earbuds," which, technically, they're not) that offers an adjustable, in-ear fit. The foam tips on each earpiece go into your ear...

Deep bass response. Adjustable earpieces fit securely. Cloth cable untangles easily

Uncomfortable. Overly bright frequency response. Given the price, sound quality and design aren't up-to-snuff

For $150, these earphones should sound and feel better.

Nov, 2009

Product Specifications

The Koss CC 01 isolating in-ear monitor is the first stereophone to create a perfect fit with a unique custom fit dial. Rotate the crafted knurled knob and the ear cushion expands to provide a custom fit. Koss in-ear monitors are designed to produce a perfect seal. This seal allows the variable matched transducer to directly couple with the eardrum. This direct response system means greater accuracy and efficiency across the entire frequency response range. No other in-ear monitor provides the ability to dial in comfort or performance. It's an entirely new state of the art in ergonomic and acoustic design. The transducer in the CC 01 features a custom ported design to enhance frequency response and deliver deep bass frequency. The transducer is especially cross-matched for balance across the entire musical spectrum. The result is an up-front, exacting performance with instruments retaining their size and scale on the musical landscape.


Active Noise Cancellation: No
Dolby PL / AC3: No
Earclip: No
Neckband: No
Noise Cancellation: No

General Features

Ear Canal Headphone: Yes
Indoor/Outdoor :Outdoor
Product Type:In Ear Headphones
Signal Connection:Wired
Type:In Ear