I have a Harman Kardon AVR 525 running 7.1. Recently I obtained a old but mint condition 2.1 Kenwood Amplifier. 1. Would there be any benefit if I were to use the Kenwood amp to power the surround back left and right speakers. The HK would then have two less speakers to power. 2. The Kenwood KM-894 amp is 245 watts and is actually made to work solely with a Kenwood KA-994 Receiver. When I mated the Kenwood amp with the HK 525 I found that the Kenwood provided a great deal of power to the two connected speakers. In fact, the volume was over increased to such an extend that I could not align the surround r/l with the speakers powered by the HK. I would appreciate your comments and suggestions.