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Thorsten wrote:

MY PERSONAL current realisation (where I to build one) would look like this: 1) S&B TX-102 as volume control, with suitable switch 2) 2V Lithium Battery negative pole to the grid of the Valve, bypassed with good non-magnetic silver mica capacitor and in series with a small, low q retardation coil, here for killing oscillation 3) C3g (it is currently "best sound for money" in the application) postal pentode wired as triode, many alternatives exist, the russian 6S3, 6S4, 6S45, 6E5 triode wired, EC8010, EC8020, E55L triode wired, E180F triode wired, WE 417A, WE 437A, 3A/167M and so on.... 4) Anode load inductor for C3g, I would use the S&B 120H/12mA 40% Nickel item 5) Mundorf Silver (or other to taste) Parallelfeed Capacitor 3.9uF 6) S&B TX-101 MKII as parallelefeed output transformer, wired for 4:1 stepdown 7) Valve rectified (GZ34/37) and Valve Regulated (O2A X 2, EF86 X 2, 6AS7) powersupply, around 130V @ 12mA X 2 for both Channels, AC for C3g heaters. The +B is besically adjusted for around 10 - 12mA current through the linestage valve.

May I ask you, this realization of yours… dose it has any own “sound”. My point is that if you plug this hypothetical unit right at the input stage of you power amp (not at the out stage of your front end) then what contribution of that “realization preamp” you would find be acceptable and what you feel would not be? You see, I have my “feeling” that it is hardly possible to make any tube-based completely transparent line-level buffer. Whoever engineers I asked, including my own very amateurish attempts, everyone suggest me that it is imposable.  Perhaps it was juts my experience… Anyhow did you look at the SS world for the “ultimate buffers”?

Rgs,
Romy the Cat

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