FWIW, I agree with Albert that the Tesla's are good for the money, but for a little more I prefer the Svetlana's. My tests were done in my Connie-Jay MV-55 driving Thiel CS2.2's (I've not heard the V-12). The Tesla's were certainly better sounding than the stock Sovtek's, and I used them for over a year before trying the Svet's. My impetus to experiment again came from durability issues I was having with the Czech tubes. The Svetlana's have the most natural sonic signature of the three on all manner of instruments and voice, with less tonal coloration, the cleanest transients, and the firmest bass. The Tesla's were more extended than the boring-sounding Sovtek's, but had a rising high frequency emphasis and lacked fullness and body compared to the Svet's, which I think are more neutral but just as extended. They also possess the smoothest-textured presentation and the greatest sense of image solidity. Overall, the amp now sounds more transparent to the source, with the least "electronic" character imposed. And as I stated before, longevity seems very good so far (about a year of a few to several hours a day use).
Your choice of EL34's
I would like to hear from some EL34 owners who have a favorite output tube. Your input will give me food for thought and possibly concur with my findings on some of the tubes I have heard. BTW does the Ei fatboy really put out more pwr as I have heard advistised? My thanks to all.
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- 26 posts total
- 26 posts total