I have now had my turbo mod in place for a couple of weeks, and let it run for >150 hours. I started listening with the EML and round plate tung sols this afternoon. Since the transporter was out of my system for a while while Dan was upgrading, I am working from memory, but I was not thrilled with the sound. It seemed to have lost some of the texture and depth that I felt my system had before. I pulled the tung sol 6sn7s out and put in a brand new pair of old raytheon 6sn7wgts that I have been "hoarding" for a while but not managed to put in because I liked the tung sols so much with the previous set up.
I immediately noticed more texture, and depth in the music. It just seemed more 3D and with voices popping out, percussion and finger snaps being more dimensional, and a generally more pleasing, more musical sound. These are pretty much first impressions, and the raytheon tubes still need to break in. For some reason, the tungsols seemed a little to bright and analytical for my system with the new turbo mod. So far I've auditioned, Cassandra Wilson (The Weight, Harvest Moon), Ray Charles Duets (Fever, w/ Natalie Cole), Van Morrison (Crazy Love).
I am curious if anyone else has had a similiar experience....everyone else seems to have really liked the tungsols after the power supply upgrade.