CP-800 is a very beautiful product.
But if you take a look inside :
I cannot see anything like Audio-gd has to offer.
. Regenerativ PSU (with linear regulated output)
. R-Core transformer
. Class A
. Discrete output
. ACSS technology
. Four-channel 100 steps digitally controlled relay-based volume control
. etc ...
I don't know the CP-800.
I know the Kenwood L1000C, I listened to a Krell preamp, several Halgorythme, and one Jadis D88s.
HE-9 equal to Krell, Halgorythme and Jadis? better than the L1000C by far, for me.