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
You can tell that this is a great sound, though the base probably doesn't go too low and that it lacks the ultimate authority of much bigger systems. But for a normal medium size rooms it should be just about perfect. However, it's analog source and an excellent one.
https://www.youtube.com/watch?v=zZ8YIow9m2s&t=419s

charles1dad > you have to consider your options simultaneously.

Blindjim > Appreciate it greatly Charles. Somehow A’gon slipped my post out of order, or your post got up too late. Anyhow, yep. Agreed. See above on the ‘simulcast’ episode..

charles1dad > I suspect that you’d be very pleased with a moderately powered class A push pull tube

blindjim > Mebbe so. Somehow I’ve fallen in lust with some speakers that simply don’t love tubes for whatever reason. Oh, they say they are OK with tubes, but their IMP drops say differently… so do their owners and reviewers.

Life seems so much more simple when all that is needed is to lay two very nice 400 – 500 wpc monos in between a pair of upper range speakers, kick back and dig the tunes… which is my default plug and play system choice.
Never go into the big room!!!


kdude66 > I can relate to just about everything you have said,

Blindjim > sorry to hear it. So, how many shrinks do you see each week? All of mine quit.

kdude66 > I have Tekton double Impact speakers and Linear tube audio Zotl 40

blindjim > You are the second person to mention those two items to me this week. Are you involved in any conspiratorial activities lately? lol
Is the Linear tube a Dave Berning design?

where can anyone hear these two items together or at all?

kdude66 > ,300b,45,2a3 have slightly different sound to my ears
“…. big pwr transmitter tubes that I've heard or owned generally sound quite similar with not very noticeable difference in sonics.”

blindjim > huge thanks for the insightful input. I tend to agree, right or wrong on the near audible sameness of higher output tube amps.


Whart - the horns are Avantgarde Duos which I have since around 2006

Blindjim > thank you. I don’t doubt for a minute that pair is very nice.



Inna > think about these…

Blindjim > thanks so much. Input like yours has been invaluable.


Despite my affinity for tubes, so far, only in Ultralinear with modest high eff speakers, one fact remains constant. What ever the amp is, IT MUST BE AUTO BIASING.
I can no longer bias amps, nor do I really want to.

Its been obvious to me for a bit now I’m going to have to go where a lot of gear is available to see and hear. The more, the better. A show seems in order.

There are a couple venues in my area that I am aware of which carry good inventories, albeit, not sure what would be ready to hear at any given moment. Or, if anything there would be of considerable interest. Although, I’m gonna stay as open minded this time as is possible.

I’ve read tons of stuff on INT amps both tube and SS. Gryphon and Ayon appear to have an awful lot going for them in the 300 & Triton III, respectively. Only the latter amp applies here.

I’ve read so much it is confusing now.

These past few posts have been revealing. I’m deeply grateful for them all.

Physical style or build is not much of an issue for me. As long as it doesn’t look run over by a train or herd of migrating Guinea Pigs, all will be well.

Ralph uncovered the point I’ve been missing for a very long time…. The lesser the power, the better the sound. Sure seems like it to me.

One item no one mentioned yet is noise. Ultra high eff speakers amplify noise too. Keeping the power line and ancillary electronics noise quiet is another matter that can crop up or needs be addressed when in those scenarios.

Its akin in my opinion to the noises generated by turn table playback systems by the record itself.

They ain’t all perfectly silent apart from the recording itself!!

For me, this is going to take some re-thinking. Perhaps SET ownership for me ought to be on a lesser scale as a secondary system. That would be pretty do able. Two ways on a lower budget, and maybe a 300B or EL34, all in a much smaller room like an office.

Done on a much smaller scale, avoiding PP amps would be much easier.
I had planned on a smaller secondary rig anyhow.

We’ll see.

Blindjim,

You are the second person to mention those two items to me this week. Are you involved in any conspiratorial activities lately? lol
Is the Linear tube a Dave Berning design?

Yes it's supposed to be a secret but we are looking for more members

All the Linear tube audio gear is greatly influenced by David Berning and has his blessings Offcourse.

I don't know where a guy could listen to the same gear I have but I've been told that Linear tube audio is getting a set of the Tekton Electron speakers to demo their amps with in their showroom.

I went to a shrink many yrs ago and I was told that I'm a hopeless case and they really aren't qualified to help me.😃

Best set of luck to you in your search,

Kenny.
You would do me and us all a favour if you listened to Ypsilon before buying anything. By many accounts, including Michael Fremer's, it is one of the finest brands available. Yes, their 100 wt/ch integrated is $25k new. And Gryphon Diablo 300 is another one to hear. Both designers are highly respected. 

those low-powered amps sound good in completely empty room and speakers firmly attached to corners so you can hear somethin'.