My experience with the d-Sonic amps I bought early this year is that they are the most grateful equipment I have yet encountered. Nearly everything i did to or for them paid out in improvements in sound. They improved substantially when given better cables. I started out with diamondback platinums, a decent entry level cord, but they really came into their own when I installed pS-Audio's former TOL Pc he extreme SC that retailed at about $1000/meter. These can be found here on agon used for under 400 now. They also performed nicely with an older pair of Synergistics research X2 Master couplers.
FWIW, I got the biggest improvement in the amps' sound quality by putting them up on isolation platforms. I got a huge return for around $200. Because they are so small, they only need small maple blocks ($90 at dawnsplatforms) and two sets of mapleshade isolation blocks ($50) and some used brass footers from the web ($60) made a bigger difference than going from the diamonbacks to the PS Audio power cords.
FWIW, I got the biggest improvement in the amps' sound quality by putting them up on isolation platforms. I got a huge return for around $200. Because they are so small, they only need small maple blocks ($90 at dawnsplatforms) and two sets of mapleshade isolation blocks ($50) and some used brass footers from the web ($60) made a bigger difference than going from the diamonbacks to the PS Audio power cords.