The Tone Hammer will drive a power amp just fine. Done it many times
For electric bass, if I didn't have a Reiner 6SL7 tube pre, I'd be looking seriously at the Arkham Zephyr or possibly the Noble. For upright, Grace Designs Felix is the best thing I've found so far. For my doubling rig just for size and convenience, I have a pedalboard that sits on top of my cab. Tone hammer for electric, Felix for upright, into a switcher then onto a GK MB800 at the moment. Sets up and tears down real fast and I can switch instruments very quickly as well. If I could find a good power amp the same size as my MB800, I'd do that
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