Tube DIY Asylum

Need an output transformer

76.27.221.94

1974

A

I got together with a tech friend that powered up my Cyber 20 headphone amplifier with a bench power supply only to discover that one of the output transformers has a bad primary. Not super hopeful that I will be able to find a drop in replacement, but I was a least looking for options.

This amp has a "hi/lo" impedance switch which means that the output transformers have two secondaries. The primary is 8 ohms and the two secondaries are 10 and 200 ohms. It appears that this is a very specific output transformer, but is there anything that might be close?`

Follow Ups:

The output transformer primary is probably 8000 ohms, not 8 ohms (nt) - Paul Joppa 07:33:00 02/06/25 (1)
nt
- RE: The output transformer primary is probably 8000 ohms, not 8 ohms (nt) - 1974 11:40:27 02/06/25 (0)
  That's would probably explain why it says 8k on the transformer. Oops.
RE: Need an output transformer - Chip647 07:19:14 02/06/25 (0)
Given what it is, the output transformers are likely simple step down power transformers. Something like 220v primary with 6v and 110v secondary outputs. You need to take a look at them.

Decent line out transformers will be more than the cost of the cyber20 and will not fit in the tiny chassis.

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