Volume boost with acute setting, Master, Bass, Midle, Treble
Mine is different from the picture is a very old ampli.Je used in clean or saturated with a Rocktron Metal Planet.
The settings are simple but the knobs crachottent just what is normal for his age.
You can play blues, rock (with a distortion pedal), or other music with clear sound.
The acute boost a bit more punch and a slight saturation.
You must add a pdéale if you want to get a true saturation.
Overall the sound is good.
I use it from time to time for 4 years, I love the clear sound.
The only problem is that the knobs crachotent but since age is normal.
It's a good amp in all but limited to sonoritées clear, but with a good distortion pedal, it works fine too