Hello all. I am based in the US but I would like to learn more about Swiss audio manufacturers. After doing some genealogy research, I found out that I am of Swiss heritage. Is Weiss a reliable brand. I am most interested in headphone amplifiers at the moment. But I have also stumbled upon...

Can the op amps be swapped out or are they soldered in place? I also saw pics of the circuit board elsewhere and I noticed there were dip switches. Is that considered to be user serviceable and is it encouraged to experiment with those settings?

Is it possible to swap out the op amps for the XLR outputs on the RNHP?

I am looking for a locking 2.5mm quadpole or 3 ring connector for my Neumann NDH20 headphones. I found this part on Moon Audio's website but I would like a to find this part from a premium brand like Furutech or whomever else would make it. I know this part will work fine as is but I just want...

As of my purchase date in mid February 2024 they now make the plate to match the larger case.

Actually, I asked and they installed the SS2590 for me on the RCA output. They even let me get the Archel Pro case for a $5 upgrade once I told them I wanted to go all SS2590. The J2S is their latest version of the J2 series. I don’t think they took the SS2590 into consideration when they...

What advantage does using a linear power supply provide? Which one would you recommend?

I now have the SS2590 on all three op amp sockets. I actually get louder output from the RCA connection than I do on the XLR out put. My headphone amp is the Rupert Neve RNHP. I literally toggle between A for XLR and B for RCA inputs and the RCA is definitely louder. Would this issue be with...

I actually get lower output from the balanced connection. I have the baclanced and RCA connections running from the Geshelli J2 socketed DAC. Both outputs have Sparkos SS2590 Pro Dual op amps on them. I A/B both inputs on the RNHP and the RCA input is a few dB hotter than the balanced...

I only have the Geshelli DAC and RNHP in use but I want to get the Schiit Lokius on the balanced inputs.

This my stack. I bypass the DAC and EQ to edit on a different input. I listen to everything for enjoyment. Flipping amazing with AKM4499 and Sparkos SS2590 op amps.

Would Sparkos SS3602 or SS2590 fit on this board?

Thank you!

Out of shear ignorance on my part could you please list all parts needed? I would order 2 fully assembled SS2590 chips with Dip 8 adapters from either Geshelli or Sparkos. Plus just one of the link provided extenders?

I have my J2 socketed on order. I got the 2509 on the RCA outs. They also let me upgrade to the taller Archel amp encloser to accommodate more height on the interior. Do you have part numbers for the DIP8 extenders?

I am looking for a slightly larger set of ear pads for my Neumann NDH 20 Black Edition headphones. Along with a replacement cable that can stand up to broadcast studio abuse. Any recommendations would be appreciated.

How do these sound in comparison to the stock NDH 30 cable?

I’m looking for a new cable and pads for my NDH 20 BE. I need a cable that is durable enough for studio use. I work in radio and do commercial voice over work. Basically it has to be something I won’t cry about if I roll over it with my office chair. I’d be willing to spend no more than $250...

I am looking for a slightly larger set of ear pads for my Neumann NDH 20 Black Edition headphones. Along with a replacement cable that can stand up to broadcast studio abuse. Any recommendations would be appreciated. TIA.