Never saw a diagram so unfortunately I think you’re on your own there... Reflowing all the joints is quick once you take it apart, so that’s probably a good start. Never got hum from a bad cap, only hiss, but that may be a matter of acoustic semantics :) The upgrade coupling caps (if you have...

Depends on your unit. The early production units had a grounding error on the pcb that required cutting a trace on the pcb to fix. I think most of those were sent back and fixed by Joe, but if yours happen to be an unfixed one, the hum should not be developing; rather, it should be there...

For the two I have had, the rear switch is the input selector, not voltage.

Second that, very cool case!   Currently running my Jade with Audyn Cap Plus as coupling capacitors and very happy with that. Lots of speed and dynamics to go around, especially when driving with Tungsol 7802 and Telefunken 12ax7, a combo that rocks, IMHO...   Also checking the thread from...

I want one too, so please sign me up as well! Could you PM me shipping to Sweden (roughly)?

Quote: Originally Posted by pytter I know this comment was relating to a HD650 balanced cable - but would a x-splitter have the same effect for my headphones which are not balanced? By x-splitter I mean the opposite of a y-splitter - ie a single (female ) input to two 1/4 inch jacks...

Quote: Originally Posted by pytter BTW - has anyone heard from Joe the last few days? I have sent him messages and e-mails since end of last week and haven't heard anything back from him. I had hoped to make use of the free shipping that he is offering till the end of the year (ie...

Quote: Originally Posted by pytter I saw from previous posts that some have ordered upgrades from Joe. Can those that have purchased an upgrade version let me know their reasoning and their experience with th upgraded version? Well, some of the upgrades are for set-up convenience...

Quote: Originally Posted by perilymph The problem, described above, seems similar to what PaulyT, googlephone and MLA successfully fixed: see posts #517 and #520-529. Lacking their skills, I could find a local electronics shop to do the repair, but I think the amp is better off in the...

Quote: Originally Posted by Didege Ouch, i was about to purchase the Jade and the problem with perylimph worries me. On the other hand i really appreciate the answers an commitment of joe. I want to trust him but i don't want to have a wrong amp. What's your experience, those who have...

Quote: Originally Posted by elwappo99 I've found the following list of upgrades. can someone fill the blanks in on the ones I didn't put down. I'm a little lost on them. -Extra Set of RCA inputs (Converts the 3.5mm input on the back into a second set of RCA inputs) -Neutrik...

Quote: Originally Posted by Jazz9 Would the jade be a good pairing with the K601? The K601s are 120 Ohm so I don't know if they're a good match for it. I was mainly looking at ss amps (used c2c, ckkiii, shanling ph100) or hybrids (ef1) but the sale price of $300 shipped got me...

Quote: Originally Posted by oldwine i have a question, how can i put the 6SN7 to the 6AS7 socket as installed in Jade. is it mean i need to modify it again?? There's no need to modify! Both tubes use the same type of socket, so it's just a matter of finding a 6SN7 and plugging it in.

Quote: Originally Posted by Hz_joe I'm alway there but mail server seem to be had trouble some time ! May be you can contact me by 13902625251@139.com Additional Vitim on Jade - Permalloy impedance converter. If you had low impedance Cans. It will delivery more power, more clear mid...

Quote: Originally Posted by Hz_joe 6AS7/6080 can replace by 6SN7 if you want medium level & music don't have too much heavy bass. Jade also can work as Pre-amp when use 6SN7. I had try HD650. It can drive to medium to high level. SR325 to medium level. Working condition on 6SN7 is save...

Quote: Originally Posted by Hz_joe Headphone + USB DAC + Pre-amp - Will be delivery to Canada next week. I will check space on Jade. It can order USB DAC in option if it can fit in Jade. Ok, I remember now that you said the DAC + Pre-amp was going to be a different product...

Quote: Originally Posted by Hz_joe Our staff send it by airmail not EMS. May be something wrong on it ! Wil send another one from China factory to HK today and send by EMS to you next Monday. The replacement amp has now arrived, and everything works great! The hum problem which...

Quote: Originally Posted by Akselpaksel Anyone have anyexperience with amp and the AKG k601 and Grado SR60? Yes, I've been using the AKG 601's with great results.

Quote: Originally Posted by PaulyT Hi all! Sorry it took me so long, but I finally got around to fixing the hum problem in the second Jade I got from one of the other folks in this thread. Yes, the instructions Joe provided worked, the hum is completely eliminated AFAICT. It wasn't...

Quote: Originally Posted by Hz_joe Our staff send it by airmail not EMS. May be something wrong on it ! Wil send another one from China factory to HK today and send by EMS to you next Monday. Ok, sounds good!

Quote: Originally Posted by Hz_joe Pre-amp + USB DAC version of Jade will be available & Distributing in North America soon. It will be difference brand and model. I'm also interested in hearing more, that sounds like a promising product! By the way Joe, It's now almost four...

Quote: Originally Posted by runswithaliens I understand this is an OTL amp and so not ideal for low impedance cans, but I have also read of lots of folks using their Denon 2000's or 5000's in OTL amps with seemingly good results. Anyone using Denons with this amp? Well, for me it...

Quote: Originally Posted by SmellyGas My only upgrades were the Alps and the socket. Joe just emailed me to let me know he traced the hum to an incorrect ground connection to the alps pot. I hope these are genuine Alps pots. I know there's a lot of counterfeit parts floating around...

Quote: Originally Posted by Hz_joe We try to made a New unit for replacement to John but check before ship by myself. It still has small hum. John request us 100% refund include shipping charge. OK ! We will 100% refund it. I'm sorry for mistake. We will 100% reponse in it. I've...

Quote: Originally Posted by jfourc OK, tried soldering it. Hum is better now, but not completely gone. Still very noticeable. I'll see if I can resolder it, but I think I did a decent job of it already. That said, listening to Rebecca Pidgeon's "Spanish Harlem," the resolution of this...