I directly compared the Spectron Musician III Mk.2 with all upgrades to my Sanders Magtech on my Magnepan 3.7i's. With balanced connections, the Spectron did edge out the Magtech. The only reason that I didn't buy the Spectron was that there was some weird interference issue that would just randomly happen. It would manifest itself as static on my right speaker and sounded similar to cell phone interference.
I'm considering the Merrill Veritas, which is also Class D.
I'm considering the Merrill Veritas, which is also Class D.