DDW
A Carslboro 8 channel mixer amp would be ideal for you with
high & low imped inlets X 8.
base/mid/treble tone control.2 or 4 speakers. tape in and out ports + effects built in.

But remember the quality ofyour speakers is just as important as your mixer maybe more so.

asfor money buy the biggest and the best you can afford.small & cheap causes sound problems and you soon have to replace.

Graham (Guernsey)