[quote name='dmpolska']Do you mean the master level being the nob on the guitar? Because with that turned down you don't hear anything other than the acoustic sound.[/QUOTE]
Yes and no.
You can have that cranked all the way (in fact, you should crank it all the way to reduce the "acoustic" sound and get a thicker crunch, since that seems to be what you're after).
But, you also need to mind the levels on the amp itself. You should see a knob on the amp labelled "Gain" or something similar. This is similar to the knob on your guitar that we just discussed: it controls how soft or hard the tone is.
The other important knob on the amp is the Master level. Think of it simply as the primary volume control (thus the name Master). You can have both the guitar Gain and the amp Gain cranked, but you won't hear a thing if the Master is turned all the way down.
From the way your amp is reacting, and provided there's nothing wrong with either the guitar or amp, one of these levels is off. This is the order that you should follow when cranking those knobs:
1. Determine which control is the Master, and have it turned all the way down before turning on anything.
2. Turn on the amp with the guitar plugged in and the Master level all the way down. Crank both Gain knobs (the one on the guitar and the one on the amp).
3. SLOWLY start to turn the Master knob. With both Gain knobs cranked, your tone will be as "hard" as you can get it (without messing with the EQ knobs), and just find a desirable volume with the Master level.
Any chance you could find pics of the guitar and amp you have? That'd make it easier for me to express what is what.
