svmusa
100+ Head-Fier
I do agree on making instant A-B comparison difficult and subjective, but generally on few reference songs you can start picking the differences to land on a tube that gives the right synergy and sound signature with the headphone and source collection - that was my end goal with tube rolling.
I referred to an old MicroZotl original version tube rolling thread and picked the Sylvania 5692 and Kenrad 6SN7 with Sylvania GB 12AT7, the recommendations from that thread were right on.... seems like I personally lean on sound signature with bass and neutrality in rest of the spectrum so Kenrad suites me well but if I had to recommend a good tube that can satisfy a typical listener than I would go for Sylvania 5692 and Gold brand 12AT7.
Stock tubes I find bass has less definition but rest of the spectrum sounds fine with a tad less energy and impact than my NOS tubes, overall for me the NOS tubes brings a good 25% improvement over stock tubes in my own setup.
It would be great to hear others learning as well..here is the old thread for those that are into tube rolling. I have been using conclusions from scottpaul_iu
http://www.head-fi.org/t/8494/microzotl-tube-rolling-thread/60
I referred to an old MicroZotl original version tube rolling thread and picked the Sylvania 5692 and Kenrad 6SN7 with Sylvania GB 12AT7, the recommendations from that thread were right on.... seems like I personally lean on sound signature with bass and neutrality in rest of the spectrum so Kenrad suites me well but if I had to recommend a good tube that can satisfy a typical listener than I would go for Sylvania 5692 and Gold brand 12AT7.
Stock tubes I find bass has less definition but rest of the spectrum sounds fine with a tad less energy and impact than my NOS tubes, overall for me the NOS tubes brings a good 25% improvement over stock tubes in my own setup.
It would be great to hear others learning as well..here is the old thread for those that are into tube rolling. I have been using conclusions from scottpaul_iu
http://www.head-fi.org/t/8494/microzotl-tube-rolling-thread/60