I have a rather old Hsu Research sub driven by a 150W Hsu amp that has developed an annoying hum (and yes, I've debugged all ground loops and isolated it to the sub amp.) Interestingly enough, I have an uncle with the same problem, though his sub is a newer TN1220 with the Hsu VF amp.

The question is this: anyone driving a sub with their M200, and can you think of any reason not to? I'd specifically like to hear whether there are any Hsu owners who've done this. I'd just as soon keep the sub (looks like a coffee table, which gives it a high spouse-approval factor) and add a second sub in the future.

Thanks. Sorry if this has been discussed before, but searching turned up nothing.

Mike.