westyjeff
Active Member
New firmware out: https://www.forum.rme-audio.de/viewtopic.php?pid=135971
Thanks!
New firmware out: https://www.forum.rme-audio.de/viewtopic.php?pid=135971
Thank you for the comment amirm. Really appreciate it.
But how you can tell or set certain level of jitter in your test using for example TOSLINK digital input with your own test signal ? Any ideas what can be ballpark figure of incoming jitter these days on high-end motherboard (TOSLINK) ? More like 1ns, 10ns or 100ns ? Can you somehow measure it once you have a chance in the future ? Because only then I could calculate final jitter after suppression before it goes to the DAC (something they showed there about reducing jitter to 1ns is not so great regarding femtosecond clock inside or at least should go below 100ps jitter which was always good result or maybe I am not interpreting it right).
Why not use something like in AUNE S16 ? Is it so expensive or hard to implement ? The sound was out of this world between USB input but also IDENTICAL from any TOSLINK source with tons of jitter. But they used FPGA FIFO buffer with total reclocking, so completely asynchronous for all kind of inputs. Only this can remove jitter completely if I am right (regardless of audio frequency and amount of incoming jitter, yeah unless it is still in range of locking window). All samples clocked again after buffering, using internal, ultra high precision clock. Some kind of "on the fly" jitter reduction or maybe patented ESS "time domain jitter reduction" can only achieve some level of suppression but can't remove it completely - am I right here ? And situation get worse when there is more input jitter.
Yeah you won't find this solution in modern aune dacs - for instance the new one S6 that is waiting for your tests ;]. They cut it out in S6 to cut cost of the unit. It is far inferior to S16 soundwise. Maybe I will find S16 somewhere and forget about this issue. The only problem is that integrated headphone amp is bad (very high output, high output impedance, maybe fine for very high impedance headphones or planars where damping factor is not the case, sounded weird, somehow restrained and a bit distorted but after connecting to external amp it was out of this world). Dac itself is amongst the best I have heard.
You should measure this unit if you have chance (S16). It sounds marvelously. Breathtaking, real life experience. They designed this thing under full supervisor and support from Asahi Kasei (crystek ultra low phase noise oscillators, PGA digital volume regulators, FIFO FPGA, USB uses ADUM isolators and PCB looks like 1 mln $ project and YES, it was a few years ago :>). They claimed with their measurements to go beyond capabilities of the DAC itself - AK4495S. Doesn't cost too much either (sorry for a bit of offtop but this is really interesting how it works).
It would be nice to know how this DAC performs objectively
Why not send your unit to @amirm?It would be nice to know how this DAC performs objectively
Would be great to test S16 but also X1S (not the anniversary, just standard version). I am shocked that nobody has sent it to amirm yet.
Are you in the US? If so you can ship it to amir and get it back quite quickly usually
Ahh yes that complicates thingsI would love to but I am from Poland (EU).
Sad, but that explains something...I would love to but I am from Poland (EU).
Why you couldn't (easily) send your unit to Seattle.What does it explain ?
I'm so happy to see such a customer care. I'm really feeling that I paid not for the unit itself (which is, alone, GREAT) but for all the support behind, also. Kudos to RME, really! So much audiophile companies should learn from them...
Unfortunately Adi2 FS has no usb input, and that's a big no..I would love to hear budget version of adi-2 dac fs -> adi-2 fs which is the cheapest one right now.
Damn, didn't notice that !Unfortunately Adi2 FS has no usb input, and that's a big no..
They used another audio interface rather than a dedicated analyzer like AP to do the test, and bottlenecked the result.These guys only got a SINAD of 107. Is that due to using RMAA, lesser test equipment and having less knowledge or is there that big a gap in SINAD between this and the pro?
http://prosound.ixbt.com/interfaces/rme-adi2dac.shtml
They used another audio interface rather than a dedicated analyzer like AP to do the test, and bottlenecked the result.
Read this link to understand how to interpret the results and adjust your expectation.
https://www.gearslutz.com/board/music-computers/1100594-usb-interface-very-low-noise-floor.html
looking here: https://www.audiosciencereview.com/...measurements-of-oppo-udp-205-uhd-player.3660/
amir had 106 SINAD for the pro? maybe this is accurate then?