http://cgi.ebay.com/Vintage-Hafler-DH220-Amp_W0QQitemZ380068439755QQcmdZViewItem?hash=item3 80068439755&_trkparms=39%3A1|66%3A2|65%3A7|240%3A1318&_trksid=p3286.c0.m14

Here is one to watch. This amp is actually an internally bridged DH220 (badged DH300 on the back). I think I am right. Look at the binding posts, only 1 pair.

Would definitely be a nice 300 watt subwoofer amp.

Yank

It looks like a DH-200 factory-built with the internal strapping kit to create a monoblock amp. In reality, though, its still a DH-200 inside. That strapping kit, IIRC, had some initial problems with stability but it was a long time ago. Looks like it would take a bit of sheet-metal work to get the other holes back. I suspect there's a metal plate covering the additional holes needed to return it to the DH-200 config.

Cheers,

David