Whilst considering the purchase of a new-to-me '99 800rb I found this old thread and decided to do CPR on it to bring it back to life (Halloween is tomorrow, why not?).
I'm discovering what many have already raved about (seemingly far more power than rated, the GK grind/growl, tone, tone, and more tone, etc.) and how unique this amp is.
For example, the relationship between the input volume (gain) and master volume. For warmth, turn down the master and use the input gain to get more volume but keep it warm. For clarity, max out the master and use a small amount of gain. Pretty neat.
Then there's the boost knob - a class all it's own. 'Nuff said.
I ran a couple Hartke XL's with it, used the mid and hi switches in, low cut off, full range outputs and EQ flat (with a bit of highs added). I get close to my other head's sound without being unpleasantly 'off'. Can't wait to run it into my Henry 8x8, it should be a little monster.
Since my bass runs hot, I'll need to use my MXR DI to reduce my input signal slightly as my B string clips the preamp stage - using the pad cuts some of the clarity (i.e. adds warmth) which is undesirable for my tastes.
I like how quiet it is. I don't like not having a tuner/mute switch, but my TC Elec. tuner pedal I got from a bud just fixed that. Haven't tested the DI, hope it works and is clean. It's built solid -with purpose - no frills, just what is needed.
Anyway, thought I'd add MHO to the legacy of an amp that is still "alive and well" after all these years.
Raz