Old post, but just to chime i with a massive plus one for these amps.
I just stripped and serviced a SHERBOURN AUDIO LDS-1645 16 CHANNEL which has been powering 8 x BOSE 251 in our leeward shore beach bar (Caribbean heat, humidity, salt and sand) for the last 7 years... we only just lost one stereo channel out of 8. Took an inch of sand out, salt build up on the PCB was horrific. I'm not joking when I say this bar has seen at least 1 hardcore party per week for last 7 years with staff cranking this thing, blowing an occasional speaker, throwing drinks around (i'm sure it must have been soaked a few times).... this thing is still running like a champ....
stripping it for cleaning, the construction is unreal - seriously hardcore. Each channel has a sub amp board, so the above isn't even a huge issue, as we have just pulled the fuses and used a different channel (each sub board has a separate fuse per L+R channel as well as the main fuses).
Very impressed, I can't recommend more highly.