I have an old kenwood amp. I think it's around 20-25 years old. I know it was paired with AR11's from that era too. The model is ka-701 and it says high speed DC intergrated amp. I hooked it up to some speakers and it seems to draw an excessive amount of energy. After 20mins of listening the lights went on/off and the computer in the room shut off. Is this common for older amps or could there be somthing seriosly wrong with the amp. I don't want to use it because i'm afraid it would fry the electrical system. Also when listening to it I hear faint pops and also on the bass seem very muddy almost like a fuzzy echo sound to it. I wanted to use it as an amp for an svs but unless i fix the problems somehow i'll have to try something else. Can anyone diagnose the problem?