The amp is way powerful enough. Only option is its in need of repair. I'd suggest you diagnose the problem a bit as follows. I hope you have a small multimeter. If not go to radioshack and buy one for $20.
1. Disconnect your amp from your system.
2. If you have a test CD with sine waves play it into the preamp. If not put a CD on with sustained high level music.
3. Measure the voltage (AC) with the meter across the interconnect. Do this with various preamp volume settings. With the preamp turned all the way up you should be seeing several volts on the meter. If you do you have an amp problem.
4. If you don't see several volts indication (fluctuations up to 3-4 volts) disconnect the interconnect from the preamp and read the output of the preamp directly with the meter. If it reads as predicted you have a interconnect problem.
5. If the preamp output doesn't indicate several volts with loud music you have a preamp problem.
1. Disconnect your amp from your system.
2. If you have a test CD with sine waves play it into the preamp. If not put a CD on with sustained high level music.
3. Measure the voltage (AC) with the meter across the interconnect. Do this with various preamp volume settings. With the preamp turned all the way up you should be seeing several volts on the meter. If you do you have an amp problem.
4. If you don't see several volts indication (fluctuations up to 3-4 volts) disconnect the interconnect from the preamp and read the output of the preamp directly with the meter. If it reads as predicted you have a interconnect problem.
5. If the preamp output doesn't indicate several volts with loud music you have a preamp problem.