Minnesota Newbie

Hey! I've been an audiophile for a long time, while I am presently doing sound restorations. I'm here looking for new tips, tricks & products to improve my procedures and my consistently evolving playback & restoration system.
My present project is a PSAudio Phonolink II. It has been my dependable workhorse for more than 10 years, but I couldn't help wonder if a better, maybe a discrete preamp would yield better sound. New of similar quality would be much too expensive. So I took a chance and invested in a set of SS3601 discrete Class A OP Amp to replace the stock Class AB IC's. I have mounted them, but have yet to try out the mod as I am purchasing a new rack cabinet so my components are presently disconnected. Note if you want to try this mod yourself, you will also need 2 risers for each board to elevate just above the surrounding components, but still plenty of distance from the top cover for cooling. I will give an update on the sound when I get it all back together...