The only linear gain transistor available to day is a SIT. There are no commonly available linear gain small signal transistors.
The only substitute that has linear gain, is a small signal tube (9 pin, etc). or even as far as an octal, or 8 pin design. (larger tube).
There is no way to get to where you seem to be wanting to be... without encountering and utilizing small signal tubes.
The end. Period. Full stop. Counter arguments be dammed.
All the facts data and spoken of desires..., sorted though logically, on one page and in one logic session, says that this is irrefutably - the deal.
I’m not trying to sound all gruff and puffed and in charge, it’s just that this is truly the situation at hand for anyone and all, in any form of consideration.
I’m doing my best to cut off the 1050 pages of people trying to find a way around this very very very HARD reality.
When all the data is on one spot and properly gone through, in all possible way and combinations, the answer is in this post.
Where no point of insistent inquiry, or searching for alternatives through year long desert walkabouts, or peeling and poking at the edges to lift and find something else, or whining or cajoling or whatever, designing new circuits, and on and on and on... into infinity.... will ever change this one single whit.
Unless someone steps up and makes small signal SIT/V-FET transistors, tubes are the only linear gain device that works properly for audio signals, regarding proper and correct fulfillment in how the ear works and interprets/decodes/hears audio signals.
To try to help save people a useless 30-40 year walk around in a desert built out of distorted harmonics and distorted transient signal structure (solid sate transistors as we know them) ... is the deal here. Please pay attention. To prevent wrong foot beginnings and wrong foot components of it...which skew the whole search into cascading ~decades long~ errors...
All that... 50+ years of solid state design in preamps. For nothing. That's a big mess to choke down. Many will refuse and ignore the final data 'end' points as they come into shape or have come into shape. The circuitry design is still very useful, we just need the correct transistors. Linear gain SIT and V-Fet transistor types. The ones we walked away from (via major corporations deciding everyone's ultimate audio fate) as they emerged in the early/mid 70's. Where the 'new at the time'...non-linear FET and non-linear MOSFET was a little bit cheaper....
Saving people life, and time, is the deal here. People are of course, free to ignore, and do as they please...
