ffkk hing,

what is the special of using 用牛輸出?
站在用家立場，用牛做coupling 和電容coupling 的pre-amp沒有多大分別，亦不能說牛coupling pre-amp比電容coupling 的pre-amp好聲，只是電路設計不一樣。但用牛coupling 的pre-amp ，輸出阻抗會較電容coupling低，較容易匹配後級。

Isn't all Tube amp using output transformer?
如果你說 Tube power amp，無錯，市面上Tube power amp 電路搕j部份都是用 Pull push 或 Single end 設計，必須使用牛做輸出，除非是OTL 設計的Power amp 才不用牛。

thanks. tom.tsui.

I have been an owner of the Cortese for 3 years and the phono is sublime - even with stock tubes it kicked my old Convergent into touch - not even close. Now with my front ever increasing with refinement, the Cortese just keeps giving it. No need for step ups ! give it anything, you will be suprised even how the cheapest carts on the market can really sound like the Denon 103R - currently running in a Denon 102 - sounds superb as well !

It is a shame that Supratek has stopped business as I am a big fan, so much my friend Scallywag also bought the full pre power combo 3 months before Supratek called it a day.

If there is one item I must keep in my hi fi it has to be the Cortese, everything else can be replaced - that's if you are a vinyl man .

好野緊係要推介下啦

still any Supratek users there?

用緊6SN7 Cabernet約三年，非常滿意

Good! 我在用Cabernet dual