I just finished getting an ornery electrostatic headphone amp working (after endless hours of troubleshooting) and decided to roll a few TP tapes to take it's measure. I'd been rolling tubes in and out and found a decent sounding set which are partly burned in now.
As my previous post indicated, I was a little burned out on this particular selection but my plan was to work my way through all the tapes. One of the things that I was never super happy with was the way that the song " Abilene" got a little congested on my other headphone and speaker system. This time, there was zero congestion and I could hear the instruments as they should be, separate and singing in their individual tonalities. I can tell you that I was just in heaven! Afterwards, I had to wonder just how deep a sonic well these tapes are. I'd assumed that the congestion was an artifact on the master tape (we're talking very, very subtle here) and just something that I'd have to live with. Ahh, the joys of rediscovery!
So if there's something on one of these tapes that you're not happy with (that isn't an obvious glitch that's part of the master), it could very well be the tape telling you that you need to do some serious tweaking. And if that doesn't help, maybe technology will catch up with the potential of these tapes someday.