a slightly different approach here; if you really like the sound you already have, but just want it louder, an option is the Bad Cat Unleash. you plug your amp's speaker output into it, where it runs into a reactive dummy load, then the unleash re-amps it through a 100 watt class D amplifier. you can turn anything from a 1 watt amp up into a 100 watt beast! it can also be used as a more traditional attenuator: run your amp flat out but re-amp it down to a lower volume. It also has an effects loop, so your effects can actually be run after the power amp.
