I want to give the drummer in my band a better monitoring system. He already has a small mixer which he uses to amplify the metronome. I could give him line out from bass amp and vocals. Guitars are more tricky since I would like to avoid miking the amps and use line out / effect send. Therefore I need a hardware speaker sim. Is there anything small, cheap and simple that would do this job? Something like IK Multimedia iRig would be great but obviously I don't want to use an IPhone. I was thinking of some older guitar pedals but I'm not sure if it would be better than miking the amps.