Don T you said you have used your Concert and Beta heads as power amps to drive a monitor, well thats what im looking at doing. I guess i didnt phrase my question right. The jist of how to use it is plain enough but what my main concern is, is proper signal. i want to know if anybody had any problems with distorted, noisey, weak, out of phase, etc signals from a P.A monitor out when useing the amp as just a poweramp.