Simplistic NJFET RIAA

[Salas]

Originally Posted by Joachim Gerhard

Thanks, i do not claim that it is superior but i like the general idea to make it as simple as possible.
I even can not tell if it works correct. It just came out of my mind without asking to be born and without your Simplistic it would not exist. In that sense you inspired me.

Honored as I said. Simple can be disproportionally rewarding some times, epecially with non exact but lovely old analog tech as vinyl is.

[The Space Egg Corp]

N

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C

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Si.

B O O J A H !

[buzzforb]

Salas,

I take it you have a favorable opinion of Sonny's TSSA. Any furthercomments there. Will you listen to it on your own system, soon.

[Salas]

Reminded me a lot the SSAs we already know, those early Mosfet two stage ones we tried out, it does not lose the soft and resolute tonality fingerprint. Behaved DC steady though. A finished amp. Now how much more complete in sonic details is to the others, I will have to finish my own Sonny TSSA too and take it near to my friend's installed SSA for A/B. My SSA P2P is in bits due to be overhauled to what we did after Shaan's input. TSSA 1.6 It surely is a great amp. No wrong to go for it if the power and damping is enough to a system.

[buzzforb]

My new system is altec HE, so no issues dampening and power wise. Thanks for the info. Ill let you know how folded simplistic sounds on sota table with ortofon bronze cartridge.

[Salas]

I will give the exact Folded Simplistic circuit we did in a small PDF with basic instructions maybe tomorrow. Now I am tired to assemble that paper.

[buzzforb]

No worries. Supplies will be next week at the earliest. I have the schematic RCruz posted. It just has folded cascode on input stage. Trying to decide whether to go as shown or integrate with DCb1 output. Guess i can always change later.

[vgeorge]

First a big thanks to Salas for the nice time we had for a few days. Not only for the hifi part, but also for the endless conversations and the good company.
Salas report is so complete, that there are not many things to add.
Just some things to emphasize. First, the new version of the phono, apart from the better sound, is a LOT quieter than the previous one. No ham or interference detected, even with the lid off. Also a tight layout is very important for phono, maybe more than boutique but bigger parts sometimes.
Also Sonny' s TSSA is an excellent amp, too good to be true. If your speakers are suitable, you would be fool not to go for it, even if you prefer tubes.

[vgeorge]

Buzz, go for B1 output, as Salas says. It is very easy to make a test after, just lift a leg of the fet and add a resistor.
Regarding super tweeter, what efficiency do you aim at and budget?

[vgeorge]

Originally Posted by The Space Egg Corp

Hi George

What do you have there, on your #26 line-amp between the valves ?
Are they some kind of variable resistor ?
( am I nuts ? )

Cheers

Si.

You mean for volume control? I use an Intact Audio AVC. Maybe you mean the big 100W resistor? It is used as cathode resistor for filament bias. Check the #26 thread for more details.