I have a Dynavector P-75, and it had a broken RCA jack(cheapplastic). I replaced the 2 RCAs with Vampire cryoed, gold over copper, and cryoed single crystal copper and silver jumpers to the board. It not only fixed the problem, the difference in sound quality was amazing. I'm going to replace the 3 little ps caps with Blackgates ($7.each), and possible send the whole unit out to be Cryoed. Besides the mass loading and feet, i was wondering if a sealed lead battery would improve the sound. I know they say the external ps does not matter, but i would think that running "off the grid" should sound better, i haven't tried the battery yet but the unit is 12V so it will easy to try.