I bought a TB500 on a whim as a easy carry backup for my Hiwatts. It is so much more than that. I have recorded with it, done small shows with it and even used it to open for Dokken last year in front of about 3,000 people in a large outdoor venue. I liked it so much I bought two 1x15 Orange cabs, they sound great btw. The tone controls (Treble,Mid,Bass) while simple seem to function a little differently than most amps. They act more like independent volume controls, sounds weird but play one and I think you will understand what I am talking about. I have tried other Hybrid amps before only to be let down. The Orange Terror bass delivers tube tone, feel , and impact in spades.