Conrad Johnson Owners.com

tmp_17195-IMG_20160207_0949101463681238.jpg tmp_17195-IMG_20160207_094951-470713275.jpg This unit is 11 year's old. It's in excellent condition physically and sounds like it just came out of the factory. The unit has been checked out by a local tube expert (Pat Hickman, ClassicTubeAudio.com) and gi...

PV14L-S2 in e excellent shape. This model has the SE upgrade. As per Conrad Johnson, the upgrade consists of: "The Series 2 upgrade consists of: one 20 uF/600V cap added; six resistors replaced by Vishay resistors; four diodes replaced by RHRD460 diodes; 6C4 tubes are replaced by Mullard 8080s....

RJ,

What's the difference between the 14L and the classic se besides the caps and resistors, guts wise? It appears to have similar design if not identical using the two 8080 tubes and a basic/classic electrical layout? It doesn't seem to use heavier iron. Thx

RJ, interesting theory. Seems to me all of the tubes travel a long way to get to the States, seeing as they're all coming from China or Russia. If you are in Australia, the treasures would actually be closer, if i correctly remember my geography lessons. Either way, thanks for your feedback. Makes l...

RJ, thank you for your detailed answer. My tube technician, who's very capable (Pat Hickman, classictubeaudio.com), will do the upgrades.

I'm curious to know if you have tried the Shuguang Treasures' KT120s or just the tung sol's? Also, where do you buy the tung sols from?

Thank you,

Jon

I own a mv60se amp and pv14L-s2 preamp. I'm looking at doing a cap upgrade to one or both. If I choose just one, which would you all suggest I upgrade? I'm sure I'll gets lots of explanation, but I do appreciate hearing the whys for doing the amp or preamp. Thank you for the assistance, it's most ap...