Found this site which is has some data on the units in this discussion:
http://www.hometheatertalk.com/ubb/Archives/Archive-000002/HTML/20010220-10-000134.html
Worth reading.
I personally have the P3A with the power supply upgrade. First, the upgrade is essential - performance dramatically improved for very little cost.
PS: I'm doing a comparison of the P3A to the TACT internal DAC this weekend.
http://www.hometheatertalk.com/ubb/Archives/Archive-000002/HTML/20010220-10-000134.html
Worth reading.
I personally have the P3A with the power supply upgrade. First, the upgrade is essential - performance dramatically improved for very little cost.
PS: I'm doing a comparison of the P3A to the TACT internal DAC this weekend.