Got a shipment notification mail from Fedex today, for my 220V GSX-mk2 :D

  Headphone jack. Lets get back to the GSX as I don't want to be OT.

Yes, I'm collecting the components to build a modified F5 using the BA-3 frontend with lateral HItachi MOSFETs as output device, just 25W into 8 ohm though. Can drive efficient speakers as well as the HE-6.

I said "certain applications" and that does not include the GS-X, Justin already said that these JFETs run at Id of 1mA so even GR grade will do fine, there is not much point to go for a V grade, and then use a higher value source resistor to degenerate the Id down to 1mA.

  Justin already explained it, I recently purchased a matched quad of BL 2SK170/SJ74 and it cost me USD35. V grades are practically "unobtainium" in the market and only people who acquired them years ago will have them, V grade's higher Idss and transconductance will give an advantage in SQ for...

Are these 2SK170s BL grade or V grade?

Indeed I found Justin's mail from the SPAM folder

Hi Justin, I ordered and made my full payment in March 2013, but I haven't got any email so far. Could you check. Thanks and regards.

I pre-ordered my black, 220v, DACT version 18 march, 2013 :rolleyes: It was still batch one price back then, but had to pay in full.

  http://www.pc-hifi-shop.com/

Yulong A28 is officially launched in China yesterday, retailing at RMB3280 which is slightly less than half the price of DA8 in China:   http://www.erji.net/read.php?tid=1591807   No impressions from the local audiophile community yet, but people who ordered yesterday will be receiving their...

The LKS Dual-9018 DAC is getting pretty popular in Hong Kong, as a few reputed hi-fi players in a local forum (www.hiendy.com) are giving it very good reviews. One of them turns out to become the local distributor of that DAC in HK, so there could be an element of bias as well.   2 guys from...

Would there be individual mail exchanges to confirm things like voltage (220v in my case), shipping address ...

I don't know which exact discontinued JFET A8 is using, I'll ask and see if he's willing to disclose. BTW, DA8 retails for rmb6600 in China.

Quote:   Yulong gave some information which are very close to your observations: 2 x 50W toroidal transformer, 1 for digital section and 1 for analog section (DA8 has 1 x 30W only). A few extra regulators. Some surface mount type components are replaced with through hole ones, to...