Kludge OTL 4 Headphone Amp

Headphone Heights

Welcome to Headphone Heights, the place for all your ear bud discussion

If you are looking for a OTL headphone amp that can drive both high and low impedance headphones, consider the Kludge OTL 4 headphone amp. The write up and circuit can be found in the old Vacuum Tube Valley Issue 11 starting on page 24.

If you are handy with a soldering iron, you can make it yourself. I got the iron from Heyboer, who makes excellent iron.

This amp performance really depends on the tubes selected. With high quality NOS tubes, such as a RCA 5691 red base, and a Bendix/Tung Sol 6080, the amp sounds very good, and easily competes with much more expensive headphone amps.
" Don't look back. Something may be gaining on you"

Satchel Paige

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Parts Connexion

Topic - Kludge OTL 4 Headphone Amp - Freo-1 19:03:19 07/26/23 (2)

RE: Kludge OTL 4 Headphone Amp - sisterray 17:15:01 02/09/24 (1)

I had a Stax/KGSS HV setup - Freo-1 12:27:51 05/16/24 (0)

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