Hi guys,

I have a Studiomaster VLM (50W MesaBoogie Mk2 clone) that has gone terminal! My amp tech advises that the torroidal transformer is u/s and that, unless I find a replacement, the amp is as much toast as the transformer!

The problem is, we have no clue as to the spec of the transformer.

Studiomaster have a few guys from the 80s who remember the amp but the tech-specs have long gone and only hazy half-guessed information remains.

I wonder whether you could help us out, please? My expertise is limited to “man with screwdriver and meter” level and thus I’d need to be spoon-fed to some degree.

I believe we need to know:

1. what are the primary and secondary winding specs?
2. can a substitute torroidal transformer be obtained (or are we into bespoke re-wind territory)?
3. is there a suitable external transformer that could be used to sit in the case or hang off the underside of the amp?

Your thoughts and expertise would be much appreciated. Thanks!