Koss · Open-back · 1980s (in a 1985 brochure)
The HV/X belongs to Koss's High Velocity family, which began with the HV/1A in 1974. Koss calls that model the first dynamic headphone able to reproduce all 10 audible octaves, and the HV name carried on through the HV/1LC, the HV/1A+ of 1987 and the HV/Pro. The HV/X was on sale by 1985, when it appeared in a Koss brochure, and a version with level controls was sold as the HV/XLC. Listings turn up in Europe as well as the US. Little else about it was documented, and Koss's own history doesn't mention it, so treat each pair as a find and judge it on its condition.
Before you plug in
No fault is documented, and Koss no longer lists parts for it. Pads and the cord are the parts that wear on any headphone this age.
New to used headphones? How to check a used pair covers pads, cables, channel dropouts and fakes, and impedance and your amp explains what will drive it.
Buying guide
Only one HV/X is for sale, an HV/XLC with level controls titled tested and needing new foam, at $59 delivered, so this is one asking price and not a market read. Koss lists no HV/X pads, so plan on hunting for foam that fits. Its impedance isn't documented, so ask for the label, and plan on a home stereo's headphone jack, since a phone may not get it loud enough. The photo shows a coiled cord ending in a 1/4-inch plug, so ask for a short video playing music with the cord flexed near each cup and both level controls turned.
$59.00delivered
The only HV/X for sale, an HV/XLC titled tested at $59 delivered from a 100% seller, with a coiled cord and 1/4-inch plug in the photo. It needs new foam, which Koss doesn't sell, so budget time to find some.
Vintage Koss HV/XLC Stereo Headphones - Tested - Needs New Foam
Delivered prices include shipping as eBay quoted it to a US address on Oct 14, 2026. Many sellers charge by distance, so your total may differ. eBay shows yours before you pay.
Snapshot
Checked . Some may have sold.
Delivered prices include shipping as eBay quoted it to a US address on Oct 14, 2026. Many sellers charge by distance, so your total may differ. eBay shows yours before you pay.
Used$59.00delivered
$59.00 · free shipping
Buy It Now$59.00
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Good buy
HV/XLC with level controls. Titled tested, needs new foam.
Seller: electric-city-repair
100% positive
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