Audiophilepure

https://www.hifichoice.com/content/gold-note-mediterraneo

Piano always presents a fine test of a turntable’s pitch stability and even with the standard PSU in use there is a sense of exemplary control and grip on Rachmaninoff’s Rhapsody On A Theme Of Paganini performed by the Chicago Symphony Orchestra. Switching from the standard PSU to the aforementioned PST-10 delivers no immediate benefit to speed stability, but does reveal a little more detail in the recording. The sense of hammers hitting piano strings, the sheer mechanical force and impetus of the playing and the rich tonality of the stringed instruments in Variation 18 all reach a higher level with the PST-10 taking charge.

https://www.stereophile.com/content/clearaudio-concept-active-wood-turntable

Instead of just appraising it, I ended up buying Courtney’s collection, and I learned some things from the experience. Even with really dirty early-vintage pressings—even records with visible surface wear and scratches—a thorough cleaning makes the music sound almost pristine. I asked Fred Cohen of New York’s Jazz Record Center how that is possible, and he told me the grooves on these old records are spaced wider than they are on modern records, so surface scratches have less chance of damaging the actual grooves. Whether for that reason or some other, after a cleaning, these records sound great.