When I had the D1's and later the D2's I had really good luck with Nordost Tyr2 IC's and original Frey's for SC's. I had an Octave V110 integrated and now the Aavik U300. I have since moved up to Ansuz Ceramics. The Ansuz MainzD8 (power distribution) with a Ceramic or Diamond power cord is quite magical. Lowers the noise floor and makes everything sound even more natural and open regardless of other cables. As a side note I had an in home demo of the new Ansuz Diamond TC power cord. I couldn't believe how good it sounded but at 20K USD for 2M is a bit pricey
Other good cables with Raidho are Siltech and Kimber.
Other good cables with Raidho are Siltech and Kimber.