Tube Rolling on PSE HL1 hybrid line stage preamp


I just recently purchased a PSE Hybrid line stage pre-amp. I have heard that tube rolling can make a difference in this preamp. This thing is a real sleeper it easily equalled the Sonic Frontiers Line 3 and sounded much better than the VTL 5.5, Plinius M16, Classe CP-60. I have it paired with Vandersteen MOdel 5 speakers which are the front end of a home theater and 2 channel system. My amp is a Sim Audio Titan. The sound of this combination is awesome but I thought maybe could make it a litter better if someone has had experience with other than the Sovtek 6922's. Any help would be greatly appreciated.
richfield_hunter
Albert Porter,
Thanks for the response. I am a novice at this tube thing. I always had solid state only and then Richard Vandersteen kept telling me I needed to experience the Model 5's with tubes and I am impressed indeed. I will call the people you suggested and look for something better. Thanks again for the input.
I agree with Richard Vandersteen about the inclusion of tubes. He has been making "that comment" for several years. It always brings a smile to my face when I hear people still repeating it.

If you should speak with Dean at PSE, have him call me. I would like to know how he's doing.