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.
128x128markusthenaimnut
Ok Guys, I spoke too soon about the hum being caused by the tubes. I bought a new set to tubes Tung Sol 6SN7GTB and hum is back. The previous tubes where all this started were Psvane 6SN7 Treasure MKII. Now the strange part is the 6SN7 tubes that Mick sent me do not hum. I have asked Mick if the preamp, he sent me, takes only one make and model of tubes. @jslateiv as you can see from my post I do not think its the gain issue. I could be wrong but lets see where this goes. 
Did you clean the pins on the new tubes? Also new tubes can be noisy at the beginning.
Well Mick gave up on my Cabernet hum issue. He does not know why the other new tubes hum and not the ones he sent me. I do not know if he tests his preamps with other tubes and only uses Russian tubes to calibrate his preamps. He is going to ask his technician in USA to take a look at the preamp but Mick says he is moving states so I have to wait till Mick tells me. In the meantime I have bought KAB subsonic filter and do not have the woofer pumping when playing vinyl. Also lifted the ground switch on my Parasound A21 amp and that has reduced the hum somewhat. The journey continues.