Warnerwh comments may be correct, but you can always get this amp serviced by any good shop. I own the a400s and the amp is simply world class. I paid under $1000 used and would put this amp up against any SS amp at any price. Bass is very deep, powerful and rolls along tightly.
I do not find the amp to be clinical at all. Highs are sweet and notes very transparant. I like it better then the Belles 350A monoblock amps I owned. Get this, I even prefer it to the JC-1 monoblocks I owned. If the 200 sounds like the 400, then it is a steal!
You must use the XLR input for best sound however. On the a400s the difference is not small. Amp responds very well to better XLR IC's also. In my system this amp is killer.
I can get it seviced by any local shop if needed should Marsh go out of business. I do think they are still in business however.
If you can get the 200 at the right price, then go for it. A good price would be $700 or under shipped.
Also, I can run this all all day with very loud music and the amp barely gets warm. It is dead quiet mechanically with no noise through the speakers. It has two sets of binding posts which are great for biwire or when using a powered sub for speaker level hook-up. I have not heard a better SS amp for the money than the a400s. Again, this is in my system. The only better SS amp I have heard in my system is a Mcintosh MC402 amp. This Mac amp will drop your jaw and is lots more money used however.