Bob will recall that I use the 101/200 version of these, albeit with re-capp and upgrades to circuit. There are kits available to improve these (already excellent) amps, though whether the cost outweighs the improvement I'm never sure. I wanted this combination for ages,......
on behalf of uzzy; no, but nearly
The 220 version was more or less the same as the 200, but with better looks/connections.
Not sure about the electronics exactly but very similar.
Switch a few caps etc., and they stand up very well to current amps.
Further to this: In late 1982, Ivor Humphreys published a minor 'fix' to the DH 200 amp, to increase the Class A in the output. I still have the letter he sent plus the diagrammes and instructions! I also have copies of the 'Gramophone' review of the DH110/220 version (and the DH200....) which they were impressed with. Martin Colloms did a 'Can amplifiers sound different' article as well featuring Quad, Hafler, etc..