Supratek Owners Thread


Greetings All - 
It appears that the 26-million-plus view, multi-decade "Preamp Deal of the Century" Supratek thread has been removed. I'm not sure why, but suppose there must be a reasonable explanation.
In any case, on that thread I recently asked whether there might be interest in a "Supratek owners thread" and received some interest. 
The purpose of this thread is for Supratek owners to share the details of their system, ask questions, share information about any tube-rolling they have done, and so forth.
I'll kick us off here with a few details about my system -
ancient Linn LP12 with Ittok arm, Dynavector 17D3 cartridge into Cortese LCR phono stage
Power amp is a fully serviced Innersound Electrostatic amplifier
Quad ESL63 speakers (not USA monitors) or JBL 4430 studio monitors
Digital sources are immature and evolving - ancient Fostex CR300 cd player/burner
DacMagic 100 DAC
Nordost Blue Heaven 75ohm interconnect
Due to the fairly long lengths of speaker wire required in the new listening room, speaker wire is Belden 12 gauge wire designed for low-voltage outdoor lighting systems. 
Next steps - dedicated circuit, new power cords, new interconnects, new wires.
markusthenaimnut

@markusthenaimnut good to hear…I like the sound of RCA black plate 6L6G, GE 807 and Westinghouse 807.  The 807’s have even more bass, slam and overall fuller sound.  Both sound excellent just different.

I am the happy owner of Mick's resurrected Grange. Until now (since 2022) I have used 303 tubes (Takatsugi). I remember Mick telling me years back that I should definitely also try 45 tubes with their respective adjusted settings; I might be actually even happier with those. Right then I bought a set of Sophia Electric 45s, but never used them. Two reasons: I loved the 303 sound, especially the wide open sound stage, and: the Taks are real eye-candy! I could, however, use some even better definition around artists and instruments, as well as a bit clearer voices (Mark Knopfler on "Brothers in Arms": I can only really understand 30% of what he's saying, digital or analog).

Question to this illustrious users group: has anybody experience with the switch from 303 to 45? What to watch out for, what to expect sound wise? [432 EVO Aeon server over MacbookAir M1 on ROON), MSB Discrete DAC with USB/optical connection, Supratek Grange Phono- and Pre, Miyagi MEMS cartridge, ViV Lab Rigid-Float tonearm, PTP Audio idler turntable, Linkwitz Store Powerbox active crossover/power amps, Linkwitz LX521 speakers.]