wakka992

thanks Alex, ordered!

yhea!! I've been waiting for this! superhappy

Hi Alex, any news regarding the USPCB micro USB version? my Chord Hugo 2 is waiting

thank you very much for your assistance John! can't wait for my LPS-1 and ISO Regen to arrive BTW I think I think I discovered what Meanwell means with that "-V connected to AC FG" on the datasheet --> it shoul be "external of the DC barrel conected to the AC Frame Ground". Since I'm not an expert on this, @JohnSwenson @Superdad does this make any sense to you? does that mean the Meanwell GSM40A and GSM60A I posted about earlier are shunted? thanks as always

On the light of the following lines from @JohnSwenson to my question I add: should I ground both SMPS input to LPS-1 AND LPS-1 output to ISO Regen? I want to both "shunt the high impedance leakage" and "prevent system floating with respect to earth ground"

Hi Alex, exactly, I'm buying a used ISO Regen LPS-1 combo. Thanks for the tip on the CUI SMPS. I'll wait for your shunted power supply to be avayable (I've found it from shop but the minimum order is for 500units XD); in the meantime I'll externally shunt the stock Meanwell one. Regarding LPS-1 and SMPS grounding, for what I know in general you should have only one earth in the entire system, to avoid ground loop. If that is the case, since my DAC is already powered by a shunted SMPS, adding a second shunted SMPS for the LPS-1 could create ground loop OR the LPS-1 isolates the ground at the input from the output (in addition to isolate the output from the AC)? Thanks for your assistance!

Dear @JohnSwenson I'm about to receive my LPS-1 and I was looking for a SMPS already internally shunted instead of going with the external adapter route as per your quoted message. I think I've found a Meanwell unit that should do the trick, but I can't figure it out if what I'm reading from the datasheet is correct or not. The Meanwell I'm speaking about are the AC-DC medical power supply from GSM40A and GSM60A series. From the figures I think they are grounded/earthed at the "outside" of the Standard DC plug P1J. From the datasheet PDF of this power supply I founded the following added under the Standard plug P1J pinout scheme: "-V connected to AC FG". Please find attached the .pdf datasheet with the quote I'm mentioning at the bottom of page 3. Thanks for your assistance! GSM40A-SPEC.PDF

Hi guys, I've just bought from a guy here in Italy a used UpTone Audio Iso Regen + UltraCap LPS-1 Power Supply combo. He bought it in July 2017 directly from UpTone Audio. He report that the unit works flawlessly but I vaguely remember I read somewhere there was a problem with the first batch (maybe? dunno, couldn't find an answer in the thread). Am I making this up in my mind? XD Looking forward to hear your ISO REGEN @Superdad

my bad, I thought I did a search before posting... maybe I did it in the wrong thread... anyway, I stand corrected, it's a 24AWG microphone cable, considered a 21AWG for the "Effective AWG of combined twin conductors".

Hi John, first thing first thanks for your input and your inclination to share your findings with us, I really appreciate it. To best apply JSSG to starqud DC cable I'd like to ask you what do you think of using a standard "CANARE L-4E6S" Star Quad Microphone Cable as it has the following properties (vs. Speaker Cable CANARE 4S6) : - Capacitance between conductors: 150 (vs. worse 125); - Capacitance between conductors to shield: 185 (vs. not shielded); - 21AWG (vs. better 20AWG); - Nom.Imped.: 44ohm (vs. not measured); - ready to use shield for JSSG application (vs. not shielded). If anyone else has better suggestion I'd like to read your thoughts. Thanks!

thank you very much for the fast reply @Cornan! That is what I wanted to hear Right now I'm building my own JSSG AC cable. Genthaudio JSSG Etherner and USB are coming in the house in the next week!

Guys can you please tell me if the JSSG Cat 6A Ethernet from Genthaudio is shielded twisted pair or unshielded twisted pair (U/UTP)? If I get it right the shield is "floating" and not connected to the ethernet connector...

Thanks for your reply Conrad, unfortunately my Hugo 2 is always in charge as I use it in desktop mode. When you say "It is possible to ground the coaxial inputs/outputs without damaging anything" do you mean that I can ground the coax while in use or that is easy to ground an unused coax? Since I use also coax that would be a problem...

Hi guys, a bit off topic here, but bear with me: my last desktop DAC was grounded as it had the classic 3 prong power cord, but since my new Hugo 2 SMPS is a 2 prong one, does the battery powered Hugo 2 (and reflectively any battery powered devices) need to be grounded? If yes, what should I ground, the Hugo' power supply with JohnSwenson method or the input connection (or both)? Before answering bear in mind that I use USB input on my Hugo 2, but after the PC I have an Intona Galvanic Isolator, and between the Intona and the Hugo 2 I have an iFi iDefender, a little gadget that effectively "break" the ground connection and inject new power from a secondary LPS. So my chain is as follow: PC -> Intona -> iDefender (powered by 5V LPS) --> Hugo 2 USB input thanks for your input

can't you just solder a wire to the ground of a RCA plug? assuming you've plug laying around... same for 3.5mm jack I assume