Hello Richard,
Upgrading from Delta v2 RCA to Alpha v2 RCA was as big a jump as you said! Specifically, first, the localization of sound was very stable and the stereoscopic effect improved significantly. The vocals are firmly anchored in the middle and the instruments are where they should be. Next, the middle and low frequencies, which were somewhat lacking, are now clearly audible without being too much or too little. The glare of the sound, which I sometimes noticed, has almost disappeared. Finally, the reality of each sound has improved significantly.
Great success! I can’t believe TAP can have such a huge effect. I have gradually replaced the cables in my system with Shunyata Research products and have never been betrayed. In other words, the sound only got better each time. Again, the sound quality is much better.
I’m so happy. Thanks!
-Satoshi