As a solid state, this amp is fine, but compared to a tube amp, you can feel the difference. My little tube amp, which is only 1 watt, sounds much better than this, especially in overdrive or metal sound. And I use an overdrive pedal on both of them. I am going to buy a 50 watt amptube which is a little more expensive than this. As for the Champion 100, I am in doubt to sell it or hold as a backup amp.