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Koss CL20: Budget On-Ear Headphones with Surprising Sound

Experience the ultimate in transparency with Koss CL/20 clear on-ear headphones. With a unique clear housing design, you can see the electronic components at work while enjoying crisp, clear sound. These headphones have a 1/8″ stereo jack and a 6ft cord.

Key Features

  • Frequency Response – 18Hz-24kHz and Impedance – 16 ohms
  • High fidelity stereophone utilizes neodymium rare earth magnet and 16 micron mylar element for deep bass and treble clarity
  • Flexible headband with sling allows for easy, single sided listening and maximum durability
  • Straight, single-entry, 8-foot cord for home and portable use
  • Includes 1/8-inch and 1/4-inch stereo plugs for home and portable use
  • Perfect for deejay use

Sound Quality

Considering its budget price, the CL20 sounds fantastic. It delivers smooth mids, non-muddy bass, and very good treble detail.

The soundstage is intimate, as expected for a compact on-ear headphone. Imaging is good enough to pick out individual instruments.

From acoustic ballads to electronic pop, the CL20 provides pleasing musicality. It’s a great portable option for easy listening on the go.


The no-frills plastic build keeps costs down without sacrificing quality. The headband and ear pads provide a comfortable fit even for extended use.

The foldable design fits into backpacks or handbags. While not luxurious, the CL20 offers everything needed for casual listening.

Customer review

First off let me just say, i love these headphones, the quality is very nice but at least on my computer i need to adjust the EQ but once i do that they sound amazing. The only issue really that i have with these headphones is that i have to carefully bend the headstrap wire a certain way as to give the earcups more of a clamp to my head, and then it works great, the thing about that though is you have to be careful and make sure you bend it right so you don’t have to keep messing around with it potentially breaking it, and it’s best to put some tape around the plastic sliding piece once you get the headphones set to where you want them as to avoid the plastic breaking.

But i’ve tried quite a few different cheapo headphones, and by far these work best for me, which is kind of unfortunate because i’d rather not have to bend or tape anything and ideally i don’t want to have to adjust my EQ when i used to be able to just plug in a pair of headphones and have good sound, these days headphones just aren’t what they used to be for whatever reason, but aside from EQ adjustment which isn’t a big deal, the only real flaw with these is the design and the need for more clamping around the ears so they’re not loose, plus when they clamp it gives fuller and deeper sound and better sound isolation.

Customer questions & answers

Q: Does this item come with a case?

A: No it does not come with a case

Q: Does it have a microphone?

A: No, it doesn’t. You’ll need to buy one.

Q: Would these be good for podcasting?

A: I haven’t podcasted. But I have owned many sets of headphones. These are an amazing deal. Light, inexpensive & sound great!

Q: Would these be good for listening to music and podcasts on a daily commute on the bus and train? With the jostling, getting on and off, etc.

A: yes they are the best headphones for the price. i use them with my ipad in bed watching tv and they stay secure and sound great a+ you will love them

Q: know it includes 2 adapters but what size is the actual jack?

A: The PLUG is 1/8″ – and, mine included only one adapter, to 1/4″
No jacks.

Delivering clean, balanced sound in a portable form, the Koss CL20 punches above its weight. For listening on-the-go without breaking the bank, it hits the sweet spot.


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