Yeah, Skylab's review of the LCD2 about 1 1/2 to 2 years ago mentioned the CSP2 IIRC. Look under the LCD2 reviews - it's worth reading along with many others there.
He found it a bit rolled off in the highs. Steve confirmed the CSP2 (now 2+) doesn't suit orthos, strictly speaking. Some technical reason. That's where the Taboo or MiniTorii come into play. Being power amps rather than preamps I guess they have the current delivery the CSP2 doesn't have.