Hi everyone. I recently have bought NAD 3120 amp. from Ebay. I also bought NAD302 which is newer also. I noticed that the 302 sound has more detail and dynamic. Is this because the 3120 is too old or because of its charactoristic? Is buying an old amp. drops it performance? (a lot? ) coz I'm now consider buying old audiolab 8000A and Cyrus II from Ebay as well. Has anyone ever listened to these amps.? Please show me the light.