Jeffdachef 5,000+ posts
Gunz That Turn on Nunz
its because the 2nd one is a new model of the 8604. No one has tested the new model but the old model is a proven performer. Newer might not be better since a chinese company took over pioneer so the quality could be good or bad, i'd wait for amplifier dyno results from testers to see if its worth a buy or not.I found 2 Pioneer amps
GM-D8604 FD class
GM-D8704 D class with wired bass remote.
Both amp look the same, but which one is better?