You need install ASIO driver. When you use DSD, volume on Foobar2000 not work, you need to use control on your prem/receiver.
ASIO support 2.1.2
https://www.foobar2000.org/components
ASIO4ALL: this one is good too
http://www.asio4all.org/
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I built this Linux audio in March, the Tone1 work with DSD64 without problem by using ALSA. I haven’t figured out how to play SACD ISO with this linux version yet so not sure if the ISO works like in Windows10
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the “new” sound is decidedly less wonderful - using either the wharfedale 10 speakers (10.1’s + 10.gx sub) via a nad d3020 amp (previously gorgeous, now profoundly disappointing), or the focal elear headphones (as above)
it’s not totally crap, but it is significantly less musical - a combination of harsh upper register and muddy bass
yes, i’m hearing some frequencies that were masked before, but a lot of the detail i liked is missing, like listening from behind a curtain compared to before
my advice ? don’t go there, unless khadas can confirm the “upgrade” can be easily reversed - which in my experience in the last day suggests is not (easily) possible - in fact so far = impossible
Khadas controversy! 
Could you post your REW (Room Acoustics Software) measurements for both v1.04 and v2.00 firmware and what MIC you used for the audio measurements e.g Dayton Audio EMM-6 etc
Subjectivism is an involved discussion with regard to audio reproduction one persons perception can be different to the next.
Wiithout actual data, measurements and evidence your post simply becomes an opinion, I am not attempting to derail your own experience simply trying to get to actual evidence if there are changes between the 2 firmwares.
With regard to downgrading the firmware v2.0 to v1.04 having tested this successfully this is a simple process. If anyone on this post could post there measurements for different drivers i.e Windows UAC 2.0 driver, Khadas_Tone_Driver_V4.86.0_201118 etc this would be most helpful.
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pleased for you that it’s simple
my board is recognised by windoze as tone1 and plays, but there is no recognition by either version of tusb (current and the original) on either computer i have tried (both win10 - pro and standard)
agree on perception being individual; the fact that it sounds crap to me is the important issue for me - if it sounds good to you, then enjoy !
please post explicit instructions on reversing the flash, as the failure to even see the device in tusb makes it rather problematic
happy for any assistance
for those who are enjoying the new version, enjoy 
i don’t
I think you can use this to flash it back old FW since it’s the only one can detect the device after flash
- Khadas_Tone_Driver_V4.86.0_201118: Install the driver in order to run step 2
- Khadas_Tone_DFU_Tool:
My bass is pretty much the same and more musical in midrange. Maybe depend on what equipment we have. I connect Tone1 directly to this integrated tube amp. At first, it’s kinda strange but after a while, I really like it.
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“At first, it’s kinda strange but after a while, I really like it.” Ouch! 
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I could take a little offence at your passive agression (I am British) I was simply stating the process from my own experience was not difficult.
As Alashikita has posted launch Khadas_Tone_DFU_Tool_V4.86.0_201118 open the KHADAS_XMOS_80B_PID000A_DFU_20190409 (v1.04).bin file and flash. Windows will auto configure and you should see XMOS DFU in device manager.
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thanks so much for concise instructions - fixed !
somehow i neglected the Khadas_Tone_DFU_Tool_V4.86.0_201118 part, probably the consequence of frustration and despair
don’t take offence at (your perception of my) passive aggression - understandable as i’m australian and less inclined to accept being patronised (especially by the mother country) when i’m annoyed already - not that you meant it to be patronising i guess
like most things, simple to fix if you have done it… and now it’s simple
as for perception bias, i am well aware
however, i am also a creature of habit, and my review reflects that the music i sampled is so well known to me that i was aware of differences… that i found grating… maybe it is “better” with the new drivers, but being accustomed to the old one means it’s music as i expect it to sound; neither is superior (maybe it is to acoustic science as numbers), but one is preferred
apologies for any perceived slight, which was not aimed at you, but reflective of the hours i had wasted when too tired for that to be sensible
thanks sincerely to thd0*1 and Alashikita for fixing it
fwiw, it sounds “better” to me, and i’m the one that has to listen to it here
it’s my repeated experience with sound set ups that there is definitely superior synergy with some chains of components, and i guess by the same token, firmwares, where what appeals to personal taste is accentuated and thus makes it magical
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Are we compare the British, Australian, and US? I thought Australian and British have similar accent…lol…j/k
I mean strange in more tones than I heard before. So I started playing couple more songs to see if they’re different and they did. I was listened with high biterate songs.
Not sure which driver you use with v1.04 but I like XMOS driver instead of Thesycon for windows 10 while ALSA for archive linux.
No worries glad it helped, I can sympathise with your frustration! I possibly think this thread may go big given your own experience and preference to the previous firmware. It will be seen if other Toneboard1 owners feel the same and discuss here. The question could be what is right for you? As you have stated it is your own listening experience that matters, it is all about the music after all that is really what counts.
Happy and contented listening!
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i agree that the windoze xmos driver sounds fine - back when it originally auto-updated i changed it back and preferred the windoze one, or probably more correctly thought they were equivalent enough that i preferred not to have to battle with the o.s. to repeatedly fight off its enthusiasm to “fix” the perceived problem of a non-proprietary driver
as for asio (apart from being the australian secret service of the same name), i have read that it makes no perceivable difference, although next time i need some frustration, i can set it up - i’m running foobar (with the skin that makes it look like an early version of i-tunes, without having to again fight off unwanted “upgrades”)
sources are mainly flac ripped at 44.1k / 16bit, streamed from the nas, plus a selection of higher bitrate stuff that sort of fell of the interweb somehow - don’t tell asio, i guess
ps. piano and vocals sound lovely with 1.04; it was somehow mixed way back on v2 with my system
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If it’s good with old FW with your equipment, then stay at what you like. At least you have experienced the different between them.
Since HD is cheap, I have been ripping my CDs as uncompressed FLAC so the BiteRate is very high. Each file is between 50mb-80mb where it comes out 700-750mb each CD. Even thought the CD still sounds better than FLAC but not that bad to compare of. I can live with FLAC, less hassle to swap the CDs. I bought a few SACD on Amazon and ripped as well but can’t tell the different between SACD and ISO rip. 
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Is it worth to upgrade firmware if you only use SPDIF input?
And any sonic difference?
Hi, the driver is only required for USB transmission. There is not much difference in the sound.
The new firmware and the Khadas USB Audio Driver are both for XMOS USB input, for SPDIF input not big difference for sound quality.
The new firmware still improve the switch mechanism between USB input and SPDIF input:
- V1.0x: Will only switch to SPDIF Coaxial IN when setting the output device from Tone1 to other device on your PC.
- V2.0x: Auto switch to Coax IN for both cases below:
- Songs not played
- Tone1 output device switched
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But for USB it is?
Have you changed any FIR filter or what?
SPDIF spec is lower than than the USB but majority of SPDIF devices are decent since you don’t run high format songs. Whatever the FW is, the SPDIF is pretty much the same. However, if you use USB, then it’s different. I am happy with new FW for the USB because SACD ISO DSD works perfect with new FW. It doesn’t hurt if you want to upgrade the FW in case you want to use with USB later. Since you use SPDIF often, you may able to tell if the new FW is sound better or the same. I have used absolutely SPDIF input for CDs player on different DACs before, it’s better than using USB.
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I was running Dietpi 6.31.2 and I am update to 6.35.0. Not sure if this is what you need. The update failed, so I will need to reflash my SD card and reinstall Dietpi.