This is an Ultra phono preamp, specially wired at the client's request with two sets of phono inputs and a switch for them on the back panel. It uses the same chassis and faceplate as the Ultra DAC. Just different back panel jack arrangement.
The Ultra phono preamp uses our normal Ultra mother board, the line section is not populated, and six high voltage regulated power supplies are dedicated for the phono section only, one for each plate resistor and one each for the power mos-fets. This is one pure and stable power supply for a pair of 12AT7/ECC83s tubes! The unit was supplied with JJ Electronic ECC83s tubes.
I doubt if one can conceive of how pure and dynamic and musical a phono preamp can be until you actually hear this. It is of course the same phono section supplied in the complete Ultra SL or EC preamplifiers.
Glad you like it.
Frank Van Alstine