I wouldn't use the Quattro Fil because it's not well-suited for fast digital sources. It's better for line level and phono signals. (That's why it's the one cable Nordost makes with a 5-pin din connection on one end to connect it to tonearm wiring.)
Why not use it? While most cables Nordost makes are fast like the SPM and propagate a signal at 99% the speed of light, the Quattro Fil lags behind at only 95%. Unsurprisingly, given its slower speed, its capacitance is 50% more than the SPM: 12.0pF/ft vs 8.2pF/ft. You don't want a cable designed that way for your intended use.
Acoustic Zen's Silver Reference mkII, on the other hand, is a good match for a digital source. It's fast, very musical, and highly detailed, especially in the upper mids through the high treble. For your application, given you have a mild hearing loss in the top octaves, it's perfect. You will never hear "too much" detail in the top and confuse that with coloration, IMHO.
Why not use it? While most cables Nordost makes are fast like the SPM and propagate a signal at 99% the speed of light, the Quattro Fil lags behind at only 95%. Unsurprisingly, given its slower speed, its capacitance is 50% more than the SPM: 12.0pF/ft vs 8.2pF/ft. You don't want a cable designed that way for your intended use.
Acoustic Zen's Silver Reference mkII, on the other hand, is a good match for a digital source. It's fast, very musical, and highly detailed, especially in the upper mids through the high treble. For your application, given you have a mild hearing loss in the top octaves, it's perfect. You will never hear "too much" detail in the top and confuse that with coloration, IMHO.