I had or guess I still have a MTX Thunder 2301.. What it basically is is a 300watt rms@2ohm(mono block amp). Last summer I noticed a few times the amp was working but literally only pusing about 1/2 to 1/4 as hard... All controls worked as normal, just the amp would only give me 1/4 of whta she had.. I always thought a amp was either working or it wasnt.. Of course stereo amps one channel can go out and the other remine working. Now the fan dosnt kick on @ all and the amp works 1/4 the way full time!!! So, anyone have any ideas on why this once fine machine(for the price) decided to "retire" from really preforming? thanks! Drew