i had several simple HP amps and the only one i TOTALLY dig is the
OZ AUDIO quemix 6
amazing machine, 6 HP outputs with alot of gain,
there is a main stereo input (lets say the mixer output goes in here)
and 4 extra injects, this means that on every channel you can adjust the volume of those 4 injects AND the main volume (awesome if someone asks to just turn a guitar up, or whatever....)
plus there is a send and return on every channel, for reverb or so..
all ins and outs are balanced, very low noise,
i totally dig it and i will definately buy this thing again if someone steals it !
plus the built quality is so much higher than berrie equipment, it looks nice, sounds nice, but the price... i think i paid around $150 for mine, second hand..
its not a 19" rack thing, but i like that, you can just put it on your desctop or anywhere else, doesn't take up alot of space,
i highly recommend this HP amp cause its so so nice, not just decent, but real real nice
...edit: i got 5 sennheiser HD280's connected to it, thats a killer combination