Really intrigued by this. Can you tell me what is the ground post for on the side of the box? Is it required for isolation? What kind of cable would I need? Thanks for your help!

Great seller. FAST shipping, arrived exactly as described. Love the Eikon, thanks!

No way! That's crazy. That thing has quite the story behind it then lol. And yeah, I agree, my R2R11 wont be going anywhere either. BTW, Im thinking about purchasing the isolator that you mentioned to me in the post you linked me to. This one: https://www.aliexpress.us/item/3256806124557142.html...

Oh no! Can I ask what is your main dac right now? R2R11 or something else?

Ah ok, that's why there are multiple options for the NOS mode, I was wondering "why have them if they don't do anything". So that "grittyness" I'm hearing when running in NOS mode is because it's not oversampling but it's applying a filter, and when you have one but not the other, weird things...

I emailed Audio gd asking the differences between running Os0 and NOS mode. This is the response I got: -- "Dear Sir In R1, set the "N" mode, N1-3 is the same NOS mode, it is a new architecture NOS mode written by the designer of R1, to provide more pure musical sound quality. When setting the...

Some of that technical talk is going over my head ha ha. So just to reiterate. Os0 is ACTUALLY zero processing of any kind? It's like a"true" nos mode? Whatever is going on it's sounds fantastic and I guess that's what really matters lol. Thanks

I'm learning a lot in this thread. Wow R2R-11 really is a great deal even if you don't use the amp portion. Need to spend more time with the R-1 but so far it definitely feels like the natural upgrade from the R2R11

Yeah, I think I'm gonna stick with Os0 for week or so before I experiment with other settings. I just got the dac today and it's too hard to gauge the differences because I haven't really gotten used to the sound enough to distinguish subtle differences. But that is interesting that you share...

Hmm, think I will shoot him an email. Been messing around with different settings for the past couple hours. And so far, whatever is happening in Os0 mode I'm really liking it! Think it's my favorite setting so far. NOS mode sounds good but my initial impressions are that it has a "gritty"...

Ok got it. You guys are gonna hate me for asking so many questions I apologize in advance haha. So when switched over to NOS mode, the 3 submode options don't do anything? Or are there different sound filters for each choice? Fred mentioned that in the newest firmware the differences were...

Ok now Im even more confused haha. So Os0 mode is like a NOS mode, but there IS some digital processing going on? Whereas switching over to the TRUE NOS mode means there is NO processing or oversampling done?

Indeed I have. Just re-read it and looks like I may have missed the part about the clocks. From what I gather, the 2021 version ONLY comes with the accusilicon clocks. I'm just a little confused about the NOS submodes. The manual for the r-1 2021 says theres arent any different options, but I...

Interesting. So even though I can cycle through 3 different options for NOS mode, does that mean they aren't technically doing anything? Or am I required to update the firmware? Another question if I may. The shipper box says "R-1 2021 (accusilicon*2), is accusilicon the upgraded clocks? Sorry...

Oh ok. This is a preowned unit so it mustn't have the latest firmware. Thanks for that. So the Os0 mode is technically inferior?

Received my R-1 today. Pleasantly surprised to find out its the 2021 model (I'm assuming that means it came with upgrades?). Anyone here possibly willing to explain the differences between the 2021 model vs other years by any chance? I've only been listening for an hour or so, and I know these...

Thanks for the info. Do you happen to know if the 2022+ models of the R-1 also apply reclocks? Still not sure which year the pre-owned R1 I bought is from since I haven't received it yet. So based on what youre saying - earlier year versions are more likely to see benefit from a DDC because they...

Definitely will. Thanks for all your help. This forum is such a great resource!

Spent a little time reading up on DDC's yesterday. Audio-gd ones come highly recommended. Do you happen to know anything about the Singxer SU6? That one also seems highly rated and its significantly less expensive than the audio-gd options...

Okay got it. I think I will use an isolator for the time being like you mentioned. Thanks again. Does an R2R11 with a ddc or an isolator hold its own against an R-1? I'm wondering if I would have better better off investing in a DDC instead of a new dac... have to wait until I get the R-1 before...

Okay, I think I get it. How does something like that compare to running via USB directly to the the r2r11 with upgraded USB clocks? Also, I have a topping d10 that converts the signal to spdif output. What exactly is the DDC doing that makes it superior? Better circuitry and less jitter compared...

That's really interesting. Still learning about this type of stuff. What is a DDC? Is that different from the USB isolator that @sajunky posted about? Also, how difficult was it to replace the clocks for crystek ones? Any sort of tutorial available for something like that? Thanks!

Wow, really helpful, thanks! Will do more research about usb isolation. A couple more questions if you don't mind. Still waiting for the R-1 to arrive to me, so in the meantime I'm trying to learn more about it. I'm not sure what year the model R-1 I'm getting is. Is there an easy way for me to...

Hi guys. I'm a long time lurker of this forum and especially of this thread. Just got my hands on a used R-1 (non NOS version) and I figured this might be a good place to ask a couple questions if it's ok. The R-1 is just the DAC portion of the R28 correct? Like it's basically the exact same...