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Koss VC20 Volume Control

by Koss
| 28 answered questions

List Price: $9.99
Price: $9.01 & FREE Shipping on orders over $35. Details
You Save: $0.98 (10%)
In Stock.
Ships from and sold by Amazon.com. Gift-wrap available.
  • Volume Control Provides Convenient Level Adjustment From Stereophone
  • Connects To Any 3.5Mm Stereophone Jack
  • Includes Pocket Clip
  • Includes pocket/belt clip for convenient positioning
  • Can be used with any portable music device
  • Connects to any 0.125-inch headphone jack
  • Minijack iPhone compatible plug (not gold plated)
  • Lifetime warranty
55 new from $4.68

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$9.01 & FREE Shipping on orders over $35. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

Koss VC20 Volume Control + Stellar Labs 35-4180 In Line Headphone Volume Control
Price for both: $18.86

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Technical Details

Size: ..Stereo | Color: other
  • Volume Control

Compare to Similar Items

This item: Koss VC20 Volume Control
Customer Rating (2690) (49) (1104) (63)
Price $ 9.01 $ 9.72 $ 15.75 $ 16.80
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Amazon.com I Deals Amazon.com Amazon.com
Color other Multi Black, Silver Black
Special Features Volume Control Information not Provided Dj-Style Shure EAADPT-KIT Adapter Kit
Fit Over-Ear On-Ear On-Ear Information not Provided
Dimensions 0.75 inches x 7.65 inches x 4.75 inches 5.75 inches x 1.56 inches x 5.13 inches 2 inches x 10.2 inches x 7.2 inches 1.2 inches x 8.4 inches x 3.7 inches
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Product Description

Size: ..Stereo | Color: other

Product Description

Provides convenient level of adjustment from stereophone. Includes pocket/belt clip for comfortable cord postioning. Connects to any 1/8" stereophone jack.


The Koss VC-20 volume control can be used with any music player. A convenient pocket or belt clip lets you position the VC-20 where it's most comfortable for you.

Product Details

Size: ..Stereo | Color: other
  • Product Dimensions: 7.6 x 4.8 x 0.8 inches ; 0.3 ounces
  • Shipping Weight: 0.3 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B00001P4XH
  • Item model number: 155954
  • Average Customer Review: 3.8 out of 5 stars  See all reviews (2,690 customer reviews)
  • Discontinued by manufacturer: Yes
  • Date first available at Amazon.com: September 4, 1999

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

195 of 198 people found the following review helpful By Headphone Pilot on March 17, 2009
Size: ..StereoColor: other Verified Purchase
I already have two "no name" inline volume controls, but I needed another. This Koss unit was no more expensive from Amazon than another "no name" from an electronics store, and I've been a big fan of Koss since the late 70s, so I bought it.

First, what it IS and ISN'T. This is a volume control, but NOT an amplifier. It will make your MP3 player, etc., quieter, but NOT louder. If your source is too quiet, look for a headphone amplifier.

When I used to listen to a cassette walkman it was easy to turn down the volume when I needed to. The volume control was a thumbwheel right on the player. I have several MP3 players now, and they all have hi-tech context sensitive controls. This means (for me, anyway) that I have to look at the screen to make sure the button or slide control is set for volume. This control solves that problem. Set the player for a volume slightly on the loud side and use the inline control to get comfortable sound. If you need to lower the volume (to talk to someone, for instance) you can use the volume control without taking your player out of your pocket.

This model has a three foot cord between the player and the volume control. This is nice if your player has an FM tuner -- MP3 players use the headphone cord as an FM antenna. My generic ones were only about 8 inches long and the FM reception suffered.

The control has a clip on it, so you can wear your player safely in a padded pouch on your belt and clip the volume control to your chest pocket.

A few reviewers have noted that lowering the volume attenuates high frequencies. I tried using the EQ settings on my player (I was also using Koss PortaPro headphones).
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226 of 231 people found the following review helpful By Anthony Hicks on October 13, 2009
Size: ..StereoColor: Silver
Let me start by saying that I have been on a very expensive quest this past year to locate in-ear headphones which met what I thought were fairly reasonable standards. After all every manufacturer out there has some sports figure on the packaging so how hard could it be right? I needed headphones which were durable, stayed put while: running, using the elliptical as well as laying flat while lifting weights and doing crunches. Finally and most importantly they needed to be highly sweat resistant. The headphones needed to meet these criteria while sounding phenomenal. If you are reading this you have probably been on the same quest and can't believe what a pain it is to find something that meets such obvious standards. Well I'm happy to report that you need not look any further!

These ear buds are the best I have ever owned and let me tell you I have tried several. I have a drawer full of failed headsets which all managed to die right outside the return policy. The warranties are useless since they will only replace them with what you already have which you know will only fail in a few weeks (if you are that lucky).

The sound from these headsets is very rich. These headsets are capable of fooling your senses. I've had to pause music thinking there was external sound when it turns out it was simply sounds and instruments I didn't know was in the song because it was inaudible with previous headsets I've owned. It is literally like rediscovering your own music collection. The bass gives you the feeling of having a mini subwoofer in your head. Unless you have been to way too many Slayer concerts the volume these headsets can reach is simply stunning and will over power even the noisiest environments all with NO distortion. The Chicago subway is no match for them.
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83 of 84 people found the following review helpful By Zzyzx on March 7, 2012
Size: ..StereoColor: Black/Red
Well, the first thing is, when you read reviews of these, or any other earbuds (like the over 1275 reviews for the Klipsch S4), you'll realize how subjective they all are: fit, comfort, sound, too much bass, no bass, etc. And I guess this is just as subjective as all the others. So, here goes:

One thing you won't find on Amazon are the actual specs for these. I could only find them on the box. For those who care, they are: Frequency range 6Hz-23.5Khz; Sensitivity 102 dB; Impedance 16 Ohms; Max power 15mW. For me, the frequency range and sensitivity are most important. Stat-wise, these have a tremendous frequency range. 6Hz is very very low, meaning more bass. 23.5kHz is on the high end of high. Both are probably outside the range of normal human hearing. The takeaway is that they will not cut-off on either end of the spectrum. Sensitivity is I think pretty good, too. For me, anything over 100dB means they can get plenty loud enough. (For comparison sake, the Klipschs specs are 10Hz-19kHz and 110dB.) But specs are just numbers on paper. How do they sound? And feel?

This is the most subjective area of all. I can't tell you how they will feel in YOUR ears. In mine, after playing around with the three sizes of silicon tips, and the one pair of included Comply foam, I find that I can wear them for extended periods of time with little to no discomfort. I use the medium silicon or the Comply foam. Both provide the good seal necessary for good bass and outside noise reduction. The foam are a little firmer in the ear, but after a little while soften and mold nicely. Both types stay in well.

Now, anyone who says these are not as good as Apple buds, well, what can I say? Apple buds are notoriously bad. Take their advice with a grain of salt.
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Most Recent Customer Reviews

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Koss VC20 Volume Control
This item: Koss VC20 Volume Control
Price: $9.01
Ships from and sold by Amazon.com
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