I mainly drive my D7s through my MA252 hybrid. Bass is superb. I've heard the D7 and the ATC SCM40 both with Hegel 190 and thought the bass was fine. It's possible it was the room. Yours or dealer's? I also have an Arcam A39. For the price, I doubt you are going to find a nicer amp. Probably 1k on the second hand market. The SA30 come with all the gadgets that you are paying for and don't need as you will already/will have a DAC.
The difference between my Arcam and the Mac is not night and day. The Mac is a little sweeter and fuller with more "soul." The tube pre-amp section gives it an ever so slight flavor.
The difference between my Arcam and the Mac is not night and day. The Mac is a little sweeter and fuller with more "soul." The tube pre-amp section gives it an ever so slight flavor.