Two levels of gain.
I started with this amp 14 years ago. Then I wave of 3 amps, two lamps. I have redone the knobs and recently I rediscovered.
With my experience 'of variation of clearance between the knobs of guitars and gain settings on the amp, it really explodes.
In my case, with the Gibson Classic'60, By positioning the gain, respectively, 3 / 4 and 1 / 4, we get the game depending on the guitar arpeggio sounds to clear rhythmic rock wildest. The gains are very good overdrive, in line with the OD-1 Boss from home.
It's a good little amp with a very typical Marshall. You can play the British quietly going really well here.
on the other hand, no effects loop and its very typical. So he must love the sound and not try to get out. No Satriani and Vai. No Jazz (though ...). No big metal.
His game: Rock, Blues, Walk. Point! But he does it well!
Model purchased new in 1992!
Its more: Practical, portable and good power. For trips between friends or a quiet game in his corner, it is ideal.
Its less: No effects loop, no reverb, no real clear sound to a powerful multi upstream (type POD) because the power is too much grain.
But this amp has something magical. If you want to connect, allow time because you will not want to turn it off ........