Congratulations gibosi to your new your headphone. I think this was a very good choice. Enjoy it and discover all the new good sound. The upgrade to better gear would never be as much fun if we wouldn't take intermediate steps... ;)
I am also in the situation to use new gear, so we both have to get used to our new toys :)
Originally Posted by MIKELAP
Good thing i got the tube rolling thread its like coming home man its bad on the other threads, bickering ,complaining ,personnal attacks,WOW. Breathe in breathe out br...............
+1, the way we shape it, we love it ;)
Sorry for this long post, but I had to rectify some things and give value to some new findings.
TS 6485 (6AH6) vs. GE 8425 (6AU6) Update:
I hear the differences more using my 6H30P-EV than 6N6P-IR power tubes, which are a bit warmer themselves. Hence, these notes are taken while using the 6H30P-EV power tubes.
Warmth: The 6485 sound more open, a bit sparklier, the 8425 a bit mellower and warmer. I think ability to hear differences sometimes also depends on your personal form. Sorry, if I confused anyone ;).
Treble: Due to the more open, airy sound, the TS 6485 give the impression of more detail and space.
Stage: They also have a slightly better instrument separation, which goes along with a bit larger stage.
Bass: Both basses are satisfactory to me from the level of impact and punch. In comparison, the 8425 has a deeper bass, "rolls" more. Also, the bass has greater presence in the representation.
There is not a world between them but I found my preference again for the TS 6485 (6AH6) :)
I also have had a closer look to the Tung Sol 6BE6 and to be fair, the only disadvantage with using this tube is the lower gain compared to other ‘new’ tubes. Else, I would highly recommend to have a listen to them.
Because of the seven grids used, the jumper setting has a relatively large impact on the sound:
EF91/EF92: Airy, open, spacious representation, neutral. Cleaner than the TS 6485. This is my preferred setting. Here, the tube signature is very close to the TS 6485.
Treble: Extended, refined, not bright. Well resolved. I prefer the 6BE6 here to the TS 6485.
Mids: Quite sweet, round, clean.
Bass: The weakest bass weight compared to the other settings. Still enough for me. The bass quality is very good, well articulated and punchy.
Stage: Larger and wider than TS 6485.
I have also used the CV4015, since I was anyway on the EF91/92 setting. Smaller stage, not as deep, not as wide. Signature similar, sound not as clean and refined. Slightly coloured towards warm. The 6BE6 sounds more organized and accurate.
Because of their black background, these tubes are ideal for detail lovers.
EF95 (floating grids): More bass weight, more deep bass, but slightly lesser quality, warmer, darker than the EF91/92 setting. You trade in some of the open airyness. Depending on preference, this more bassy setting could be the one
Pin 2-7 strap: This must be the bass head setting. Maximum bass weight, weakest treble presence. Surprisingly, still extended and one could consider to live with it, kind of the LCD headphone way, if you have tried that before. Guitars sound crunchy but generally mids are more recessed. A bit dynamic compressed sound for my ears or too frequency spectrum shifted to lower frequencies.
The relative differences are similar with the Sylvania JAN 5750, even though I did not explicitly test this again.
The Tung Sol 6BE6 sounds for me superior to the Sylvania, not by a huge amount, but still, because the the Tung Sol sounds more open and airy, slightly louder and a bit more detailed.
So, I am using the EF91/92 setting as we speak, makes it also easier for every user. One problem while comparing 6BE6 tubes to the rest of the 'new' tubes is that they are not as loud as these, and adjusting the sound obviously also changes the sound impression if not perfectly matched. This is a quite common issue when comparing different gear but it means that we have to take these impressions with a grain of salt.
Label: 6BE6, 3223501 (the one is a bit smeared out). This would mean the tube is from week one in 1935^^ or I am misinterpreting something...
Edited by Acapella11 - 5/6/13 at 9:02am