Really...My favorite power tube is reissue that's not widely popular


If you run 6l6/EL34 variants, I HIGHLY recommend trying this tube out.  The Tung Sol 7581A reissue.  I've had these for a good bit of time and compared them against KT150s, EL34s (several brands), KT88s, and maybe another that I'm forgetting.  They are a mere $30 a pop and they are the best tube I have heard. I know that's a brave bold statement to make as there is so much competition out there and the tube is very much under the radar from what I can tell.  

After having these around for a long time (and in and out of the amp), I had them in and was nearly spellbound one night by how great they sounded upon reentry into my amp.  I did a search and could only find one review, which I agree wholeheartedly with.  You can find it here: https://wallofsound.ca/audioreviews/amplification/6l6-vacuum-tube-review-tubes-courtesy-of-www-thetu...

I am nearly incredulous there isn't hype out there about this tube.  Simply my favorite tube.  I thought I'd pass this along as it may be much cheaper to give them a whirl then fuss with a much more expensive power cord, cable, or other tweak.  
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Showing 4 responses by arch2

Thanks for the heads up on this. What’s your opinion of the TS 7581A over a typical EL34? In other words what’s the 34 not doing as well as the 7581A? Thanks!
tuberist...have you had a chance to do some comparisons? I purchased 8 for Primaluna Dialogue Premium HP amp. Looking forward to the comparison with the stock EL34's.
Great to hear. Thanks! I should have mine by the end of the week and I'll follow up with a comparison to the stock EL34's.
I’ve been listening to the TS 7581A’s this weekend in my Primaluna Dialogue Premium HP amp. I agree with a number of comments particularly in regards to being more revealing. I was quite surprised by that. So revealing in some instances it was like hearing a slightly different version of a song I may have heard a hundred times before. Bass is tight and extended in comparison to the stock EL34’s, but, I think I prefer the roundness of the bass and the midrange flow with the EL34’s. They seem bigger sounding and fuller in my setup. I only have 10 or 15 hours on the 7581A’s so I’ll give them a good baking before coming to any final conclusions. I consider myself a “jet age, old European potato farmer” kind of guy so I’m keeping my fingers crossed.