The soul for digital playback has been around for 60+ years, it's made by Western Electric. What you need is a pr. of 111C repeating coils. I have a pr connected to McIntosh MVP851 in one set-up & another connected to a Musical Fidelity cdp &dac.
You'll notice the difference in less than 5 min. Besides the 111C you can also use 93A or 77A.
You'll notice the difference in less than 5 min. Besides the 111C you can also use 93A or 77A.