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

Showing 11 responses by duramax747

rewimarc,

 

Not a computer person so not really sure ow to do tat wit this site. 

The photo on Mick's blog is what I have. Its the first photo and he talks about the Grange being his favorite creation.

http://supratekaudio.blogspot.com

I spoke with Mick and he said his best line stage was built around the 6J5GT and the circuit he designed. 

It's called Grange Signature. It s a four month wait but looking forward to it.
Gloss black with chrome. 

If you go to his 2021 blog from his website you can read his thoughts. 

remarc,

Congrats on your Grange.  With the white finish did you ge with the chrome? I bet that looks fantastic. 

Just pulled the trigger on my first tube pre and decided to go with a Supratek.
Because of the high cost of the 6sn7 tube set, as stated,  I decided to go with a 6J5GT tube in the preamp Mick is building me. 
As far as 6J5GT the circa 1930's RCA are the way to go. 

Whats the benefit of doing the 12v?
I'm a novice at best when it comes to tubes but I was under the impression that the 6J5 uses half the current/power as the 6sn7 hence why they last forever. 
In the Grange Signature Mick uses two 6J5 for each 6sn7.

Andy at Vintage Tube Service said the circa 1930 RCA 6J5GT are the ones to get.
jslateiv,

I appreciate you taking the time to explain that to me. It makes sense. 

Do you use a Supratek?


I should be getting my Grange Signature by New Year. Mick said it was his favorite circuit design. 

I ordered Gloss black with Chrome. Looking forward to it.

Received my Grange in Black/Chrome. I havn't had te chance to listen as my systems are tore down for the time being.

I did mangage to inspect it after it arrived and it is a thing of beauty.