This amp never ceased to amaze me with its SQ and bass output. Truly an amp to be appreciated. It has adequate cooling considering the heatsink is 2/3rds of the amp!

They WERE expensive and rare, but now they're just rare. The shell on it isn't really useful and just takes up space.

This is a fantastic amp. The twin power supplies and the 1-Ohm stability makes for a superb amp in any application. I had it hooked up to a set of Blaupunkt OverDrive 6x9's, and the sound quality deserves a standing ovation, although it was in the wrong place considering those speakers were rear fill. The amp is now hooked up to a Memphis Studio 10" DVC running at 2 Ohms mono. It gets hot enough to fry eggs at this impedance, but it runs all day like that. This is an amp for picky people. I have also a 2100G and am considering in getting another one of these. If you can find one of these amps within US$100-$200 price range, you have yourself a deal you don't want to back down on.

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Nothing that can compare except the 2100g from that year.