How to identify tube amp


I just received a pair of mono blocks that don’t have any branding or identification.  It didn’t come with tubes so I’m not sure what tubes to buy for it!  How do I identify who manufactured the amp and/or figure out what tubes to get for it?
128x128surfersf

Showing 6 responses by surfersf

@viridian thanks very much for your input!  I added a couple pics of the bottom to my g-drive file. It looks clean but definitely old. I suspect they’ve been sitting in storage for 20+ years. No burn marks tha I can see. The back plate is standard two speaker cable outputs and a single rca input.
Here’s the link to the pictures:

https://drive.google.com/drive/folders/1EJxV4DfNr4k7Mq8rZp96iPuHY10sKW_z

@firstnot if you don’t have anything useful to say then I ask you leave my thread. No need for rude and useless comments. Thanks. 
Thanks again. My uncle was into electronics but I’m pretty sure he didn’t make this from a kit.  The back panel does have an IEC outlet for a cable. The switch also is fused. Will add a picture shortly!

Thanks again, this is all very helpful!!
Closing the loop on this thread. I just returned from True Sound in Campbell. Talked to Nick Gowan who researched the pin sockets. He confirmed it’s a push-pull design that uses common tubes. He has high confidence they are EL34 output and 12AX7/12AU7 inputs. He thinks it’s early to mid 90’s, maybe earlier (he identified a cap as being built in 1985). He recommended powering up slowly (variac).  @viridian, your guesses seem to be spot on!!  Thank you.