I have an old Kenwood M2 amp that I am trying to have repaired,I have a feeling the parts might be unobtainable,I still have the kenwood C1 preamp that goes with it,I am debating on what to do if the amp is unrepairable, go with a RR2150 or a pair of M2200's. The Kenwood was 220 WPC and were used with a pair of Klipsch Heresys.Any ideas would be appreciated. Thanks in advance.