The less gain you use with the Rebel-20, the tighter and more defined your low end will be.

TUBE MIX KNOB: We did not include suggested settings for the TUBE MIX because it is truly up to you as to what sounds best. Experiment with different TUBE MIX settings to find “your sweet spot”. Keep in mind turning the knob more towards the EL84 will sound a bit more aggressive while the 6V6 setting will tend to be smoother.