Just ordered my Supratek Chenin Preamp

Cat JL-2, Martin Logan Summit.

My Syrah is almost seven years now. The longest I have ever had an audio component! 8 or 9 poweramps have come and gone, the Syrah remains.

Tube rolling is tricky. I have tried 6F6, 350B and NOS 6L6 regulators and 6106, 5V4 and GZ37 rectifiers but right now I am listening to the stock sovtek 5881 and philips 5Z4 and prefer them! The bass is better with the 6F6 and 350B, but smoother and warmer with the stock tubes.

Favourite 6SN7 is Hytron JAN-CHY, but I will try the EH 6SN7 soon

I have the Supratek Sauvignon preamp. I currently am using a Mullard GZ34 as the rectifer tube. Does anyone know if I can substitute a 5Y3GT for the GZ34. Also, is the 5Y3GT the same tube as the 6106? I like the sound of this preamp with RCA 6L6GC's used as the regulators. To me the RCA 6L6GC's sound better than the Genelax KT66's.

Hi Jek, The Bendix 6106 electrical specs. are close to the 5y3gt and could be used as a substitute. However,the Bendix is a indirect heated full wave rectifier and the 5y3gt is a directly heated full wave rectifier.Meaning,if you used a directly heated rectifier in your power supply.The other tubes in your pre would recieve a blast of full voltage before they had a chance to warm up and stabilize in the circuit.This blast of voltage would strip the cathode out of your other tubes very quickly on start up......If you are going to try other rectifiers ,make sure test values on both sides are very close or even mirror matched.If not you could get a chugging weird noise out of it.Its also important that the regulators are matched very closely,the regulators work directly with the rectifier.If you buy these tubes from a vender,request matched sides in the rectifier and matched pairs for the regulators,within 1 to 2 MA.would be best.Your ears will appreciate the great 6f6g and 6106 combo.I have afew select n.o.s. mirror matched 6f6gs Im contemplating selling,including a n.o.s.factory 5 pack of Sylvanias that are all perfect matched, all five matched with in 1 MA.of each other......I was on Micks site last night and see his Malbec amps will be available very soon,anyone here going to be the first to order a pair?