B&K ST-140 vs Superphon DM 220

I currently own a B&K ST-140 amp (the one with the handles). I like this amp quite a bit, but I have an opportunity to buy a Superphon DM 220 Dual-Mono Power Amplifier for a little less than I could sell the B&K for. Finding reviews of the Superphon DM 200 are not easy to find on the Web. Is the Superphon a better amp than the B&K? The Superphon is five years newer.

I have the Superphon Revelation II preamp
Polk Audio Monitor 7 speakers
Cambridge Audio D-500 SE CD player (silver)
Systemdek IIX turntable

Thanks!

John