I haven't gotten a chance to use the Beta Power but, I do have a Coliseum Slave I used for awhile. Ultimately, I found that just making sure I didn't have any impedance mismatches and / or having efficient speakers worked out much better. You get to a point where it is honestly too loud, you can have all the noise gates in the world and yet all that's coming out is this cacophony of, basically, white noise - and not in the vein of some experimental bands use of white noise, just awful DO NOT WANT type white noise.
Figuring out what's wrong with your current setup that necessitates the need for multiple amps might be a better route than just throwing more amps in the system.
