EL34 Lovers?


What are your favourite amps using EL34 tubes? And why?
pubul57

Showing 9 responses by pubul57

I raise the question because one of my amps is the Ars Sonum which uses four JJ Tesla EL34L and I think it is a fantastic amp with my speakers (Merlin VSM)and I assume the use of the EL34L has a lot to do with it. Every wonderfully rich, organic midrange with resulution and quite a bit of tuneful and present bass, which I did not expect due to the rep of the EL34 and the fact that the amp is "only" 30 watts (I'm use to bass, one of my other amps is a CAT JL2 which SOTA bass from a tube amp). I get the sense that there is a beauty in the EL34 and amps that use them. At least in the Ars, the tube is not "slow" "over lush", etc.
Lissnr, what other amps did you audition or compare with the VTLs when you made your decision? Have you tried other amps since and decided to stick with what you have?

Ralph, I'm a bit hesitant to tube role withe Ars since it was desinged with the EL34L in mind I am told has more gain and "better" bass attributes than the non "L" version of these tubes - the Ars certainly seems to have excellent bass performance for a 30 watt integrated. Were your JJs the "L" versions?
The amp I am considering is a Music Reference RM9SE, which I auditioned yesterday at the house of an audiophile that happens to own the same preamp (Joule), speakers (Merlin)and cabling (Cardas) as I do and I thought it was outstanding. So along with my Ars Sonum (both are EL34 based) I think this tube is a real good match with my speakers. I don't think more than 30-50 watts are need to drive the Merlins as loud as I would ever want or could take. I think that VAC has also designed some good amps with the EL34 which I want might to try.
If I try tube rolling, it will proabably be some Siemens tested by Roger Modjeski at RAM Labs/Music Reference. Incidentally, I get the sense that the EL34 tubes are Roger and Bobby's favourite tubes; Merlin owners could do worse.
Not sure how to ask this, but is it not possible that a circuit is designed for a particular version/brand of a tube - in my case the JJ EL34L, and that the sound of the amp takes that tube into account ("voiced"?). In other words, I'm questioning whether a tube really has an inherent sound independently of the ciruit in which it is used, they seem to be two parts of the equation leading to the sound of a paricular tube in a particular amplifier. I've heard many amps using the same basic tube type with very different sound attributes (the type of differences you ascribe to the sound of Siemens versus Telefunken versus Mullard); I have to imagine the circuit is just as an imporant factor as the tube type/brand. Of course, this is no reason not to try tube rolling (I have done a lot of tube rolling on my CAT JL2 with Amperex, RCA, GE, Syvania, etc), but the maker of my Ars Sonum told me to tread lightly.
I am told that the importance of the L versus the standard is that in my circuit it is produce better bass presence compared with other EL34s (more solid and tuneful - the amp is suprisingly good in the bass department). The amp also runs Class A to 22 watts (it is a 30 watt amp with a pair of EL34s)and I think the voltage spec you mention has something to do with that, but I am talking way above my head now. When I spoke with the designer I was eager to discuss a bunch of NOS options for the EL34, 12AX7, and 6922 slots - he said he tried most of them (a lot of them anyway)and he still felt the JJ in his circuit would be hard to beat - I certainly understand why he would not want NOS EL34s as the standard tube. I am going to ask if any harm is done in trying the EL34 simply based on the plate voltage handling differences.
The Quicksilver Mid Mono or Triode are two other is amps on my EL34 "hit" list. Aside from the additional power of the RM9 (the QSs are 50 watts), which is proabably not necessary with my Merlin VSMs, the three amps would seem to be good ones to compare.
As I've experimented with my Music Reference RM9, I cam to conclude that even though the amp was designed with the EL34 in mind, and even though the EL34 is said to be a good match with my speakers, I consistently prefer the KT88s in the amp in almost every way.