Picked up a Sano 50WR early 60's amp with a weird mod. As seen on the right side of amp is additional circuitry consisting of 7 pin connector, 4 pin connector, voltage selector (110-240v), power switch. Circuitry has two OA2 tubes, transformer, caps..... Power is from a jumper from the amp, other connection is from the 7 pin connector to the guitar input. Since the OA2's it seems like a voltage regulator and connection for maybe a Leslie? Power switch on/off does not affect anything as presently shown.

Reverb always seems to be slightly on, no tremelo function at this point. Overall pretty quiet when turned up, sounds good overall.

anybody venture a guess to the added circuitry?

a href="http://s284.photobucket.com/albums/ll11/76buggy/?action=view&current=100_0402.jpg" target="_blank">

Those things are such odd birds. I love the 'scribble' grille cloth. Does your mystery mod wire into the controls at all, or does it run full throttle as long as it's switched on? They did a lot of stuff for accordions including some stereo effects. Maybe has something to do with that? Have you discovered this site yet?

http://www.larryjohnmcnally...

Way Cool Amp!

I had one back in the 70's, that I picked up in an old music store,, and loved it and it sounded great when it worked ,,, but it had to many problems later so I offed it.

They are made for accordian, too!

Did you buy this in NY/NJ/PA? I played with an organist who also played accordian, and had an amp similar to yours. Perhaps it was set up to run through his Leslie?

MD

Way cool amp!

How's it sound?

Mad Dog, yes I got this at an auction in Philly. Also has 3 external speaker connections added/

Sounds great cranked up with a nice warm crunch buy still haven't got the reverb and tremelo working right.