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August 24, 2019, 07:32:42 AM

Author Topic: What is going on with this mod foreplay  (Read 381 times)

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Offline whatsgoingontubes

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What is going on with this mod foreplay
« on: November 01, 2017, 08:58:30 AM »
I recently picked up a ton of tube gear including this mod foreplay. What is going on with it?


Offline Doc B.

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Re: What is going on with this mod foreplay
« Reply #1 on: November 01, 2017, 04:20:01 PM »
The only original parts are the chassis panel, the power switch and terminal strips. The C4S boards are some sort of rip-offs, and nothing else looks like a stock part. Well, maybe the RCA jacks. You're pretty much looking at a not-Bottlehead product otherwise. I don't know what the other PC board is or why there is an extra power transformer, but someone here might.
Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

Online Paul Birkeland

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Re: What is going on with this mod foreplay
« Reply #2 on: November 02, 2017, 04:19:35 AM »
Might be a SMPS to power the 12AU7 heaters.  That would be a bit unfortunate.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man