I installed the PC1s with my 2 Yr. old 501s and am very happy with the improvement. Sound stage is wider, taller and deeper. Image is more pronounced with increased detail.
As for value, $3200 for the PC1s on top of $6700 for the 501s is alot of money. A lot of very good amps at this price piont.
For me, Rowland equipment has a very natural, uncolored sound that I have found compatable with all my other equipment over many years.
System: Esoteric X0-1 Limited JRDG Concerto Pre JRDG 501s JRDG PC-1s B&W 802Ds Cardas Golden Reference, all cords, cables and ICs ASC Tube Traps Room Dem. 13'x 15' x 9'Hi
Good question, but no Clavil, because the PS converts from AC to DC and back to AC. Rowland's PF1 only works with certain of his equipment because it converts from AC to DC and stays in the DC mode.
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