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EL34 equivalent tube types

I've had a Coincident Dynamo 34SE sitting around for my bedroom system, and I just on a lark decided to hook it to my main system for some 100% tube/analog listening sessions. I'm actually amazed at the sound this 8 watt amp is putting out.  Right now it's equipped with the (I believe) stock EL34 tubes (from tubedepot). Just looking around, vintage tubes seem to be extremely expensive, but are there equivalent drop in replacements that I could be looking at? Just to play around with, nothing serious.

This is also making me consider a more powerful tube integrated (my speaker makes recommend at least 30 wpc tube amps), but similar topics already exist so I wont create another thread for it.
nitewulf
viridian's avatar
viridian
4,184 posts
 
Some folks like 6L6 variants as a sub for EL34s. The Dyna ST70 manual actually says to use these in a pinch. So 7581/KT66/6L6 would all work.

They are certainly not electrical equivalents of the EL 34 family, and should not be considered direct subs, but some will like the distortion spectra and your power transformer should run a little cooler.
rotaryphone
159 posts
 
I also like the GL kt77 the best in new production lines of new tubes. Smooth and clean with good details. It just lacks little punch in lower region, so voice is not as rich as NOS  tubes. 
oddiofyl's avatar
oddiofyl
1,076 posts
 
I just retubed with the Mullard EL34 repops and 12ax7s and they really sound great in my Quicksilver Mid Mono amps.... 
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