Hello , thanks for the advice EF86 .
I think there was a lot of confusion regarding the synergy with the HD 800 X LF 339 ( first version: 6sj7 ). I have no ability to analyze as an audiophile , I 'm more for beginner. I think the confusion comes from the synergy of tubes with each other and with the HD800 : Telefunken EF80-800 and RCA RED with 6AS7 GT and 5998 are "VERY BAD" with HD 800 and also T1 TESLA ... I think and how they were given to be purchased early , gave this confusion . Regardless , these tubes are GREAT , but the problem would be synergistic . Using other tubes SYLVANIA 7236 (CETRON , TUNG SOL , 6080 BENDIX COLUMNS GRAPHITE , 6080 MULLARD , VALVO , BRIMAR, MINIWATT , etc. ( other brands) are GREAT FOR ME to tubes with the HD 800 and T1 . Almost all brands of tubes EF80 ( sylvania , Mullard , Amperex , Siemens , etc ... ) , 6SJ7 GT - SYLVANIA (glass ) CAN TAKE THE PLACE of the RED RCA and Telefunken EF80-800 and give a GREAT SYNERGY with T1-HD800 .
=> And you can find GOOD SYNERGIES with RED RCA and TFK EF 80-800 with OTHER TUBES MENTIONED (7236-6080 BENDIX-MULLARD).
HD800 and T1 may represent VERY WELL THE BEAUTY of the sound of the LF339 exceptionais within them qualities .
I think those who can not make a "bad review" , do not you love the object of his criticism. I am convinced that the T1 and HD800 headphone are exceptional and they are far beyond the LF339, I love and that I will not sell, I will keep forever. I bought a Decware CSP2 +, I get to know . I also love that their sound is very different from the LF339 . I think in audiophile terms , the CSP2 + SUPEPERIOR the LF339 , LF339 but stay with me because AUDIOPHILE QUALITY and BEAUTY of sound ( classical and jazz music ... I imagine for any and every type of music) FOR ME JUST PLEASURE .
I use DAC: STAGEDAC Store MEIER CORDA and a great "little" DAC - NuForce ICON USB, using it as a preamplifier with LF 339 (DAC very good for the price)
It would be interesting that the owners of HD 800 and T1 gave their positive or negative opinions indicating the DAC and the set of tubes used to confirm or deny my opinion, because most member, like me, were at the beginning totally disillusioned with the information given here and their headphone worth a fortune and which are actually great in audiophile quality.
How does an amplifier whose sound is so beautiful and recognized as among the best headphones could not be in synergy with the multitude of possible combinations of tubes and now that also has family also beyond EF80 EF86-860 (used for amplifiers guitares ?). How??
I have the AKG 702 with the 339 LF is a big winner. Attention always with tubes in synergy, the same as for the T1 and HD 800 and then you wonder why I bought so dearly others. May be that is spoken when using the HD 600-650 I never heard? The LF 339 with good tubes (they are many) are merging ANY QUALITY 702 with ALL BEAUTY - HOT - POTENCE the LF339 - DYNAMICS. AKG 702 only wins, is a big winner. I say this to those who do not have the money to buy the "king of kings" is not ashamed of the 702 which is great and much easier to pipe. However, without demagoguery, passing to the T1 and HD800, the difference is immediate, but ALSO PRICE DIFFERENCE.
Any comments would be welcome, thanks.