Amp ID

[Mjw9mm]

Would appreciate help identifying this older tube amp. Thanks.

 

[HollowState]

It looks home made to me. Perhaps from the late forties or early fifties. And is that an HK Citation II on it's head behind it?

 

[Mark Tillotson]

They all look just the same from the top! Tube complement plus picture of the underside of the chassis is much more revealing... Details of the connectors and any part numbers and datecodes or such info is useful.


And please don't crush records like that (!)

 

[PRR]

It's a Williamson or derivative, I bet. In the day, you could buy kits; some guys punched chassis and wound iron. You'd have to be very obsessive to narrow it closer than that.

It looks like a bigger/better class of Williamson.

Trace the small-tube circuits. Williamson is not unique but if you find something odd, then I picked a wrong path. Trace the big tube OT leads. Williamson is pure Triode but a lot of copies got built as UltraLinear. Show the speaker connections. A very original Williamson OT has a scad of terminals you jumper different ways for different impedances; copy-cats often simplified this. (However some totally different amps also have a dozen secondary tags..)

 

[Alllensoncanon]

Looks like it is based on the Stancor CH8133 & CH8134 reference design but not using the Stancor chassis. If it is, it should be a Push Pull UL design using two 807 and two 6SN7.

 

[livingdeliberately]

Here you go, almost sure this is your amplifier.

I recognized your amplifier right off, it is from 1949.
These were home built designs... types of transformers varied.
Have a great day!

 

[Mjw9mm]

I recognized your amplifier right off, it is from 1949.
These were home built designs... types of transformers varied.
Have a great day!

Thanks for your help, they do look similar. Matt