You might find the Circle Labs A200 interesting. Here's a thread on Audiogon where owners share their opinions, and here's a comment specifically about Circle Labs and Manger (link):
I am a very proud owner of a Circle Labs A200. To say it has helped transform my system would be an understatement. Everything that has already been said, I agree with. All I can say is that paired with my Manger Z1 speakers, I’ve never been happier. Music comes alive now and I find myself more engrossed in each song. It’s definitely a keeper.
