It is supposed to work just for your use case, to limit the sampling rate for a specific digital output so as to match your DAC limits. Try turning EOS OFF, the two settings appear to be interacting.
Hi Mjay71, I absolutely do realize what you are saying not every DAC unit has a digital display readout that shows you the current sampling rate it is reading Like the MYTEK & others. I have an old MSB DAC That is also a good number of years older. Way in the past. Almost forgot I even still had it. Well, I dug it out Of my toy box , turn it on let it settle in for about a day. This unit had not been turned on since I can’t remember After going over the unit, several times, I proceeded to hook it up to my Eversolo A8, i’ll keep in mind the MSB has no numeric or digital readout, It uses small LEDs in the front of the unit. I found the old MSB to also indicate by way of small LED, the exact same rate of digital output as he Eversolo Naturally, I am unaware of what type of outward DAC that you are currently using, Although I could be very wrong, I would think or believe there must be some type of indicator or indicators on your current DAC that you are now using in order to show the user what sampling rate is incoming. I have also found as I think I stated before turning the Eversolo’s EOS , Setting on or off absolutely made no difference to the output of the old MSB unit, what I did notice was the display screen on the Eversolo consistently read 192 on the bottom, left-hand side of the screen, In which I believe it is simply showing what it’s capability and standard is set at 192/ as you view approximately the middle portion of the screen, it will show you the current sampling right output. The 192 is just being shown down the bottom as a set possible output, capable of, now When I turned the EOS on the display down, the bottom, left-hand side of the screen was then not shown, However, an Internet radio station that I had playing was showing 48 output As I switched over to the MSP, the indicator light also move up one notch to 48 receiving input Also sonically speaking perhaps it’s just myself, but I could absolutely detect no sonic differences with the EOS turned on or off . As I stated, the only differences I could detect was the 192 that is visible on the display screen of the Eversolo bottom of the screen, left-hand side. When the EOS is turned on the 192 disappears from the screen. I may be wrong, but I don’t think so. Whatever you’re Eversolo is receiving it is outputting the same to your external DAC . As I stated above, these were my absolute total findings, And visit visualization No sonic deviation was detected by myself and the use of the EOS, I am not saying that it doesn’t exist. I just have not heard any deviations variations. Sonically I would assume, but not certain again not to be repetitious, but your external dac device I would believe but again could be wrong. Must have some type of indicator or indication displaying what it is reading I would imagine so please correct me if I am wrong I have seen DAC units in the past that retained no income indicator display on the unit, example I once had a California Audio Labs out board DAC In which there was absolutely no display only a small LED indicating that the unit was active or turned on However, I am going back in time probably 20 years ago. Please have an enjoyable week. Enjoy the music
No sample rate indicator on this DAC (Border Patrol), just an LED button to push to engage the rectifier tube for the power supply. I think I need to better understand the basics first. With EOS OFF, no matter what the original sample rate of the stream and the "max sample rate" setting of it's various outs, my A8 displays this sample rate on its screen (internal player source): spdif out: 44.1 i2s: 196 analog: 196 So say the original stream is 48k, with EOS off, A8 is upsampling the original stream to 196 before sending it out the I2S or into its AKM chipset DAC (and I assume doing the same with USB, but I don't have a downstream USB device connected at the moment to check) yet downsampling to 44.1 before sending the stream out spdif. This is with the max sampling rate set to 96k for both I2S and spdif. 1) Why is the signal downsampled to 44.1 for spdif yet upsampled to 196 for I2S, analog outs, and I assume USB? Is this by design or something I am doing wrong? 2) Why is the upsampling not limited to the "max sampling rate" for the I2S? Or is it and would be displayed as such on the receiving DAC if I had one that accepted I2S?
With EOS on it maintains the original sample rate. With EOS off, it always downsamples to 44.1 for spdif out and up samples to 196 for everything else. trying to figure out why and if this can be altered with settings. The max sample rate settings within each output category have had no effect so far on either the spdif out or the sample rate displayed on the A8 display screen.
Sorry Majay71, A little earlier here accidentally hit void button sorry about that. It happens , thank you I believe you just showed me something that I was unaware of. I mainly use SPDIF & USB outlets, with the EOS turned off I am in view of a 192 indicator front of screen bottom left-hand side, when I turned the EOS back on or activate it the 192 indicator disappears. I mainly stay on 96. I think I pulled in 192 sampling rate once or twice my findings were EOS switch on or off, made absolutely no difference passing the signal to the external dacs Naturally no sonic differences were detected either I am most certain EOS down samples TO 48 last I was aware of. I have never tried, but I don’t believe this can be altered adjusted or changed in settings other than turning the EOS on or off , please let me know your findings very interesting somewhat strange but then again most things are when you don’t fully understand them at this I must admit to absolutely after a year and a half add upon initial set up a few times this may not be of yourself I just said it and forget it, but I certainly understand your concern an interest, I would also most certainly Believe this could also be dependent upon a lot of what your chosen source may be at the time of use, Please have a nice day. Enjoy the music.
Hi Biamp. In my case, the EOS maintains the exact sample rate of the stream. If using apple music and the track streams at 96k, with EOS on it passes it through all of it's outputs at 96k. Same with a 48k stream from iRadio or whatever it's called. EOS off is where the sample rate conversions kick in. With spdif out, everything is downsampled to 44.1. All other outputs seem to upsample to 196. Trying to figure out if I can adjust this somewhere or if it is hardwired in. Thanks
Hi mjay71, perhaps and maybe hopefully you may just be correct, I could certainly be very wrong, but from speaking with a few folks that know these units a little bit better than myself, I believe it may be safe to say I don’t think so but it certainly never hurts to try. If time permits and you get a chance. Please let me know your findings. Thanks in advance, have a good day enjoy the music The older one gets the more you find yourself just enjoying what you’re still able to hear
Something else I am curious about related to internal upsampling. R;egarding the I2S out: --with EOS off, A8 upsamples everything from its internal player to 192 before sending through its i2s out. --when using a8 as a passthrough DDC, can it also upsample the digital input to 196 before sending out I2S, or is it bit perfect only? Thanks
