Well after having a few guitar players try it the results are in and they are not pleasing.
The controls work like this, the 'volume' is really a gain control while the 'drive' is just a little bit more gain in a different way.
The tone control is more bassy on the left and more trebly on the right.
It was really very difficult to get this amp to clean up nicely at any kind of usable volume, actually the 'volume' control didn't let hardy any sound through until it was nearly at 9:00.
In my opinion single 10" combos are not super useful except for maybe a harp amp. If a combo is to have a single driver it needs to be a 12" one and needs to be ferrite magnet based and have some capability of reproducing some low end preferably even a bump in that area. In this case it was a single ten
AND an Alnico one at that, way too bright and way too shrill. The tone control needed to be planted weel left of center to get anything semi useful. Plugging the amp into a 412 combo almost redeemed it somewhat,
almost.
In conclusion this amp needed a lot of tweeking to find anything close to usable, and that's with only three knobs in total, should not have been difficult but it was, at it's best it hinted of something potentially cool but fell well short of delivering.
Of course I bothered to open it up for an interior inspection. Construction was turret board style with reasonable quality components.
Still though at a $1500 price tag and a sound only a mother could love.......................................