Hi,
Max sample rate PCM is 768kHz but ROON recognize only 384kHz. I think it’s the value of the previous génération.
Could you actualize parameters please?
Christophe
Hi,
Max sample rate PCM is 768kHz but ROON recognize only 384kHz. I think it’s the value of the previous génération.
Roon supports/shows what a device itself signals (self-declares) as supported to Roon. Did you send your request to Eversolo? I think you should discuss this with the manufacturer, maybe he will release a changed firmware (or explain why you can’t get higher sample rates).
PS: From their product website the specification is given for USB and “up to”. Do you use USB and the mandatory Windows driver to achieve those maximum possible sample rates?
Sadly no specifications are given for the network input or any of the various supported network protocols respectively.
Indeed, roon ready devices always have their specific limits when it comes to specific inputs like e.g. USB, digital Coax, optical, HDMI as well as roon/RAAT. In most cases device manufacturers do not show them for RAAT.
Roon on Synology DS918+, Eversolo output RCA to Denon PMA2500NE.
Your Eversolo is connected to the roon server via USB or Ethernet?
My Eversolo is connected to the roon server via Ethernet
Then, I believe, the answer is pretty clear. The Eversolo’s RAAT input only supports up to 384kHz whereas its USB supports up to 768kHz as noted in its specs.
You may ask Eversolo if this is correct or if there might be an issue with reporting the max. PCM sampling rate to the roon server.
But I believe it’s just like it is.
You may try connecting the Eversolo via USB to your NAS but I’m not sure if this will work at all with Synology NASs.
IIRC has Synology disabled USB Audio support in DSM 7.
As I understand it, this is an oversampling DAC-Chip. 768 kHz is the frequency after the filter but as the clock is there it gets supported on the input too – but half the data just gets ignored because the filter input is 384 kHz max that then gets oversampled and filtered (to 768 kHz before further processing). 768 kHz is also listed as max USB output frequency. I assume they use a Linux of some sorts as OS – so specific DAC drivers may be harder to come by as with Windows. While there might be a slight chance for a given DAC to be supported, most probably won’t. Currently most DAC’s supporting 768 kHz are in the same boat regarding supported sampling frequency as the DMP-A6 (oversampling DAC-Chips that allow for 384 kHz max as filter input). So it seems to me that there is currently hardly a need to provide 768 kHz support. But again, you need to discuss this with Eversolo – Roon can do higher sampling rates when signaled as supported by endpoints. If the Gen 2 differs from the OG device then its firmware must reflect that and the device may even have to undergo the certification process again.
PS: Roon Labs staff doesn’t monitor threads in Audio Gear Talk. There are just other users discussing here.
The Eversolo’s answer : A6 ME ROON PCM supports up to 384KHz, which is the limitation of ROON.
From Google AI.
Roon supports a wide range of sample rates, including PCM up to 768kHz and DSD up to DSD512, according to Roon. It also handles various file formats like WAV, AIFF, FLAC, ALAC, MP3, and AAC. Roon identifies and manages your music library without altering the original files.
There are many old threads about the kit already on the forum. It looks like the same question already got asked:
I think its save to say that if nothing changed in years, it will not change now. And again, why send a lot of data so the data can be thrown away? Isn’t it better to just send the data that is needed / can be used?
I’m gonna throw 768 at my gen 1 and see what happens!
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What do you expect to happen?
Eversolo DMP A6 GEN 2 MASTER EDITION play PMC 768kHz with ethernet to RCA connection.without ROON.
Roon downsampling the same file in 384kHz.
Is it a ROON’s limitation or an issue by EVERSOLO?
It is a limitation in conjunction with your device. It is Eversolo who is responsible for the Roon Ready support they implemented into their device. You should discuss your device related issue with Eversolo support.
Complaining here in a section of the forum where no officials stop by is pointless.
This is not a complaint. It’s a simple conversation so that I understand the nature of the problem. I also have this conversation with eversolo support.
I really like Roon and it’s just to test the capabilities of my new player. Because honestly, the amount of titles available in this format is so small that that’s not what’s going to stop me from enjoying the music I’m listening to.
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Most likely even conversions / upsamples as DXD is still the de-facto industry standard for digital music production.
And again and to my knowledge, your device is a PCM 384 kHz device that just happens to allow you to send 768 kHz also (for convenience and if you do it might delete half of the data it just received). For external USB DACs you may connect, it likely has no individual driver anyway that would support 768 kHz playback. If that external DAC is also based on an off-the-shelf common DAC-Chip listed with a max 768 kHz input capability it means that he most likely suffers from the same limitation. A NOS DAC that support that or even higher frequencies are currently likely the only ones capable of using 768 kHz tracks.
This conversation interests me but I don’t understand why you say that the Eversolo player cannot decode the 768kHz PCM when its DAC consists of 2 ES9038Q2M chips. One per channel. Each of the 2 chips decodes the 768kHz PCM natively according to the manufacturer’s data sheet that can be consulted at https://www.esstech.com/wp-content/uploads/2022/09/ES9038Q2M-Datasheet-v1.4.pd
Could you explain?
As I wrote in the other thread already, see page 21.
They use an 8 times FIR filter. 8 times filters are what currently seems to be standard for integrated DAC-Chips throughout the board of manufacturers.
8 x 48 kHz = 384 kHz