Summary: Hi. I have this sony XM-604M and it did not work because I bout it like that. I like to fix amps and I bout 4 transistors four 10.00 Dollars and now it works. Yes I have a boat. (thank you ebay for this great amp)
AMC from Indianapolis, IN, Albania, Sonic Electronix
29 May 2012
Conclusion: I am running 4 kicker 6.5" speakers down to 2 ohm off the the front channels of the amp and 2 kicker 10" 8ohm down to 4 ohm off the rear channels of the amp and the power and clarity is exceptional.
power boats for fun from Tacoma,WA, Sonic Electronix
5 September 2011
Conclusion: Well it would be good for a basic system in a fishing boat but it does not have enough power for the sony 10's but it does power the 6.5s great and the built in cross overs work well but not for the big speakers even brigded it still is bairly enough for the 10s to work ok.
Excerpt: This amp is great for use in a boat, thanks to its coated circuit board. I have total peace of mind.The cons, however, are the small power terminals (same size as the speaker terminals), and the lack of adjustable crossovers for the low and high pass channels. But, those aren't hard to overcome.
Pros: Easy to Install, Good Power Outlet, Great Sound, Looks Great, Marine
Cons: No Adjustable Crossover, Small Power Terminals
mecforyou from Cedar Rapids Iowa, Sonic Electronix
6 February 2011
Conclusion: Have had this amp in our boat on fresh water for just over 2 years. We are out every weekend and a couple days a week too. The amp is covered form most of the weather but had been through many storms and has got wet and has never failed.