Sonic qualities of SET output tubes?


Can you readily identify a 300B, 2A3, 805, 211, etc., amp’s sound with your eyes closed most of the time?


If so, I’sure would like to hear from you.


Amplifier design and the technology utilized within its confines decides the ‘voice’ or influence it will yield as much or more so than merely the output tubes the designer has chosen to use.


I get that part emphatically. One must hear the amp regardless the type of output tube technology on hand.


And yes, some Pentodes and Tetrodes are used as Triodes but are not indeed triodes by their specific architecture. That’s OK, just focus on their use as Triodes herein, please.


There are however certain tube types, irrespective of vintage which have basic undeniable sonic colors or characteristics, apart from their electrical aspects which keep attracting people to amps which use this or that tube in its output stage.


Some love 211s. some adore 300Bs. Some love EL34s configured to run as Triodes. I have an affinity for the latter. So far anyway. This topic could change my mind.


Has your own experience informed you what this or that output tube’s natural flavor regularly announces itself to be so you can have a reasonable expectation of its general presentation?


What sonic attribute continually attracts you to a particular SET tube design, 300B or some others?


Or, conversely, what is it about the sound that would bring you to covet a 211 amp over a 2A3, for example.


Why as another example, would you pick a 2A3 amp over one using 805s or 300B, 211, etc. or vice versa?


Removing ‘vintages’ and electronic or electrical qualities from the argument, what sonic attributes for the more popular S.E.T. amp output tubes have you determined seem to persist in their particular DNA?


I’m asking for input from those SET tube devotees to lend their experiences and knowledge on the subject of what tube sounds like what irrespective of the SET application, generally speaking.


My goal is to try getting a better feel for which SET Tube amp design, if any, I’d want to pursue and possibly invest heavily into going forward as the soul of a new system.


Tremendous thanks to all!

blindjim
Gentleman,

Keep the Knowledge coming,

Best thread on audiogon presently.

I'm getting good factual info that were kinda grey areas to me and this thread has educated me well.

I thank you all,

Kenny.
Kenny, I am working on a 300b mod to my Lyngdorf unit. I will update once finished. I call it the "1DadDHT" mod package. Pictures coming soon! Charles, you will be asked to beta test. 
I have no idea how many watts my HO generates, although as a recent one it’s maybe 17 watts (it’s not a "Hot Rod", although those claim about the same wattage as mine), but at least 12…I currently prefer it with KT88s and  a Shuguang 274b rectifier (I mean really…a cool looking tube), and these amps come with zero published specs other than what can be gleaned from forum conversations and Had’s comments (and a published log book page  of Hads with various parameters noted in pencil…great stuff…), a somewhat unique thing with no warranty or anything other than good faith from Dennis. Also it wasn’t expensive…relatively...
Wolf--mine has GL KT88s and an RCA 5u4g.  I'm hot to trot on trying some different tubes, but don't know what works.  Have an inquiry to Mr. Had through the "auction site."  Haven't heard yet.  I understand he tweaks designs here and there, so what might work for one might not work for another?  If I have to stick with KT88s and 5u4g, it's fine, but....

OP--might you be considering having a sub (or more) and high pass on your amp?  I don't know answer, but perhaps that might be a factor in some of the recommendations.  Throwing that out there.
I had his Firebottle amp with the KT150 tubes. Tried to drive 92db sentitive speakers in a large space and the combo did not work. I like the build quality and Dennis very much. I was actually selling the amp for a friend and put it into my rig.  Wish I could of heard it on speakers better suited for it.