I don't know about the + or ++ or whatever. All I know is that I went to monoblocks that Klaus called "best I know how to build." Huge array of SL caps, the big mama trannies, high end point to point wiring, you name it. All stuffed into Stratos cases. They pair up so well with a tube pre (I had Don Sachs built me his all in model with NOS tubes). Simply stunning through a set of lightly modified Magnepan 3.7i's. These speakers were a bitch to control and were eating lower grade amps as a snack.
I had started Klaus' monos with a couple different SS amps but just felt I was missing something. Now, with the tube pre, and every source running through a wonderful tube DAC, its audio nirvana. Depending on your taste, and if you can do it, you might consider trying a tube pre with the Odyssey equipment. Klaus makes a great pre that is a good match to his amps. Guess I just want to say I'm currently listening to the finest set up I've ever had....and I'm not a young man, and I've owned a LOT of equipment in my time.