I had the opportunity to compare many options. My choice:
For power amplifiers (using Classe): Isotek Titan/Super Titan. Here, PS Audio smothered the speaker. SR Powercell is excellent.
For sources: the final choice was from PS Audio P10 (less powerful by a level worse) and SR PowerCell (SX better). Each has its own advantages. As a result, my SR SX is connected to the PS P10.
Currently, I would include the Audioquest Niagara and Shunyata Denali in the mandatory test.
For power amplifiers (using Classe): Isotek Titan/Super Titan. Here, PS Audio smothered the speaker. SR Powercell is excellent.
For sources: the final choice was from PS Audio P10 (less powerful by a level worse) and SR PowerCell (SX better). Each has its own advantages. As a result, my SR SX is connected to the PS P10.
Currently, I would include the Audioquest Niagara and Shunyata Denali in the mandatory test.