I have a black A21SE. I had it paired with the ProAc Tablette Anniversary.
It was a very synergistic marriage. I bought both pieces from my friend, who works at a local dealer, that used to sell both brands. He moved up to the Masterclass Integrated, to get a built in phono stage. I owned a Pass Aleph 3 and Aleph 30 amp, in the past. The Sugden sounds very similar (GREAT) to me. Just make sure you pick a speaker it will drive to your satisfaction, in your room.