The ART Digital MPA Gold (2-channel tube) in now selling for $399 street.
I paid that much for my non-digital MPA Gold about 3/4 year ago.
The Digital MPA Gold received hi marks in the February 2004 issue of
Future Music Magazine and also received their coveted "Platinum Award".
The review, in a nutshell said "It is as transparent or as coloured as you wish. It makes honing in on a required sound as easy as it can get"
http://www.artroch.com/downloads/reviews/ART_ReviewDMPA_FuturMusicUK.pdf
Recording Magazine also gave it hi marks saying "The overall quality of this unit is typical of preamps costing several thousand dollars...an impressive bargain"
http://www.artroch.com/downloads/reviews/ART_Review_RecordiDMPA_1103.pdf
With the variable input impedance and the plate voltage control along with variable tube colouration, I have found mine to be a very nice piece of "budget"

equipment.
Bob G.
PS-The regular non-digital ART GOLD MPA is now selling for $299!