Solid State 12AX7?

[Cantplay]

http://amtelectronicsusa.com/productpage12AX7WS.html

John

[cbass]

I think folks have been trying this for years never did catch on

[cbass]

Says sounds indistinguishable from top 12ax7 s
Which one they all sound a bit different to me

[Firestorm]

Will it work as a CF? Very useful HK limit: 350V.

[randalp3000]

these came out a couple years ago and they glow different colors
http://www.jetcityamplification.com/#!retrovalves/ctjr

[martin manning]

Those were discussed a little while back. A guy showed up who had ordered some and was looking for advice as to where to use them. The linked You Tube demo sounded a little buzzy. Interestingly, we never heard from him again, and it's been a couple of months now. Seems like if they were all that they were claimed to be he'd have come back and told us about it.
https://tubeamparchive.com/viewtopic.ph ... highlight=

The tech paper by AMT is interesting, especially the addressing of grid current. I suspect that the cut-off side will still have solid-state distortion tone.

[Reeltarded]

He plugged them in and his light dimmed. There was an ozone cloud. His town went dark. The grid melted. Some of the sparks set fire to the comm substation. The internet went down. Alien spirits from a planet in another dimension that closely follows Earth decended on his town from a -9° Phase angle and enslaved the townsfolk.

Please use known good brands of preamp tubes or this could happen to you.

[randalp3000]

anyone remember the Fetron? I have a Boogie MKII that came with one.

found this on the ol net, didn't read it tho but I think some of you guys might enjoy it.

[teemuk]

Unlike many of these new SS tube replacements the Fetron was never designed to imitate a triode, it was designed as replacement device with superior, pentode-like, characteristics.

The Teledyne Semiconductor didn't develop them for music industry / musicians. That's for sure.

Great for radio applications like oscillators, tuners, basic audio stages, etc. Not a similar replacement device when someone looks specifically that triode like performance.

Mesa used Fetrons because of their low noise and in the first gain stages where clipping was not likely to occur but that still contributed most to overall noise level. Beyond that it's a mere user error to think these things should have even performed like a 12AX7.

These Retrovalves and Warmstones are an entirely different breed designed with entirely different principles and mindset.

[morcey2]

Or the "Trioderizer":
http://www.radiomuseum.org/forum/the_tr ... riode.html

I know a couple of people who have played around with different troiderized jfets and mosfets (depletion mode) and they're supposed to sound very much like a real triode.... as long as they don't clip or saturate. That makes them less-than-useful for guitar use.

Matt

[darryl_h]

The "Trioderizer"

It's time to sack your advertising agency.

[Reeltarded]

Triodorizer. Febreeze, Lysol, Scott's Liquid Gold. Trifecta of gasses banned in Versallies.

[matt h]

(deleted)

[eniam rognab]

The "Trioderizer"

It's time to sack your advertising agency.

this reminds me of a Leo_Gnardo quote regarding turducken and garbanzo beans!

[roberto]

Maybe we can join the two threads? It will be easier to get a more complete idea of those pseudotubes.