I use an iamp 300 to amp my Eminence. I'll be doing vocals next time we perform. Would it be better to - plug the mic into the other iamp 300 channel or - bring an old guitar amp that I've got (Fender 25R) and plug into that. The fender has reverb so I wouldn't have to buy a reverb box. If I use the iamp will the vocals compete with the bass? I've heard that mics into guitar amps don't sound very good. Is that true even if you use an impedance matcher? There is no FOH, so that is not an option. I'm strictly amateur, so I'm trying to keep the cost as low as I can and still get a reasonable sound.