I have a pair of new JJ/Tesla 6V6 S power tubes which I have tried in my Fender Deluxe Reverb Reissue guitar amplifier and compared with the following brands: Ruby Tubes, new Tung Sol, and vintage RCA VT-107a. I have made A/B recording comparisons between the different brands and the differences in tone are striking. I use an American Standard Stratocaster and a good Weber ceramic speaker in the amp.
Of these brands the Ruby Tubes produce the thinnest weakest sound and I never use them. The best sounding tubes by far are the vintage RCA Vt-107a's. In fact these are considered one of the absolute best sounding 6V6 tubes of all time. They sound frequency balanced and perfectly "right" for lack of a better term.
The JJ Tesla tubes are the most masculine, darkest and aggressive sounding tubes of the bunch with an emphasis in the low frequencies and a sound that approaches the sound of a 6L6. They also sound a little muddled and artificial in the low frequencies as well. The Tung Sol sound more feminine and airy, loose and funky with a high frequency emphasis but they do not speak with much authority. To me the Tung Sol sound like 6V6s and the JJ Tesla's do not.
The bottom line is that I do not like the JJ Tesla 6V6 tubes but they may serve you well if you want your 6V6 amp to sound more aggressive or need your leads to speak with more authority. My tube preference of the brands I have tried are in this order: vintage RCA, new Tung Sol, new JJ Tesla, Ruby Tubes.
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hildgen's review (This content has been automatically translated from French)
The Discoveries of this lamp boulevers my life
Prior, a physical study of this object SimPose.
Take a 6L6 was a large glass bulb, well rounded, though stout, with a network of lintrieur imposing rectangular plates.
Now consider a standard 6V6, an Electro Harmonix, for example. We have a small bulb, cute, and the plates are shaped dune espce elliptical profile. Nothing to do with the 6L6
Now look at our JJ 6V6 then? Who does it look like the most? Hin? Cest that of his great? Cest MMMMMOOOOOOOOOOOOI! scri 6L6 suddenly sticking out his belly transparent
OK, pretty much everything EST, but we will not keep plants in front and say yes then bin, cest bizarre, but why they call Lont 6V6, 6L6 this small?
It is the branch? Come on, do not worry, we mounted a couple instead of his original post 6V6 (After all, there 6V6 described above) and heat STANDBY POWER I leave everything runs
VOLUME 2 is the clear sound VOLUME 7, large floor head round as Malcolm, mdiator shot from the ceiling as PETE and then but how what I dcrire I felt that moment, if you say that I was boulevers carquills eyes, speechless, his arms hanging, and haggard, stammering eurka?
Explanations (or study of caractrielle lobjet):
Well, with a pair of 6L6 was about 50W, a slap, cest trs dynamic sublime cest, cest rocknroll but we take full of cum when you want cruncher Lancien.
With a pair of 6V6 (standard), it falls around the 20W, we crunch a tolerable volume (all proportion guard) but the grain is much milder, the slap becomes a little flick, always enjoyable and exploitable in the rocknroll, reassure us, but can make us regret the Twin quon sold excs weight.
And how do I do if I want to slap 6L6 20W (with my amp Designed to run in 6V6)?
I take JJ 6V6 S!
The JJ 6V6 is a 6V6 + S, a rising 6V6 6L6, 6V6 a rocknrollise, vritable an invention that offers an alternative family Deluxe Reverb A must try!
Are strong, the Slovaks!