Loud enough to be heard over a drummer and inexpensive don't mix. Shop used to save money, but be sure to get enough speaker cab. I play bass and synth, but use a bass amp for bass and a keyboard amp, (Roland KC350) for synth. I have used a bass rig as well, and it's fine, but the key is having enough power, 300+ watts, and most importantly, a good/big spkr cab. Think 2x15, 6x10, 4x12, etc.