I purchased my Sunn head on eBay and it doesn't have a nameplate. It's one of these. Is there any way to tell what it is? It was made in 1970, has a tube rectifier and 6550s. It's on a single chassis (not with a separate preamp / power amp).
Also... Does anybody know where I can get a front panel plate for this. I have the one that says Sunn on the grill cloth. I need the one that goes on the chassis and has the amp model and the labels for the controls.
Thanks.