Well I had the VSP Labs TransMOS and Amber Series 70 years ago and all I can say is the Onkyo A-9555, once broken in, will outdo both of them.
When I got the VSP back from the shop it was hard to imagine what Bob Gates was saying. Well, I took delivery on the Onkyo today and my preliminary feeling is he's absolutely right.
Although the Onkyo had the typically flabby bass and honky midrange of an SS amp straight out of the box, it straightened out into something more linear, open, and transparent with excellent bass control within a couple of hours. Within 3 hours it was as much better than the VSP as the VSP was over the Amber.
When CDs are playing it's still a bit forward, but LPs sound fine. Overall I'd characterize the sound as very fast and transparent, very dynamic, with smooth treble and tight extended bass. Exactly what I was looking for.
I definitely like it better than any British integrated I've heard at $1500 or below, and like it in some ways better than a ~$2K+ Musical Fidelity integrated. The MFs still sound a bit forward, bright, and therefore a little artificial to me. I think this Onkyo will sound more real for a lot less money when it finishes breaking in.