[FredA]

Is there any really sonic/performance difference between the R-8 MK2 and the R-8 EC?

Only if an external clock is connected.

 

[Lickumms]

Only if an external clock is connected.

Is it really a noticeable improvement or is more like a 2%-3% improvement?

 

[FredA]

Is it really a noticeable improvement or is more like a 2%-3% improvement?

Depends on the clock and the dac. With the r7he mkii and an excellent clock, it is subjectively about 5-10% at least. It is not something that will be very obvious, but what will be is the difference with your level of enjoyement. When used to the external clock, you feel something is missing when it is accidentally turned off. Someone with good ears will be able to pass a blind test easily. Imaging/staging and bass are the most obvious things.

 

[FredA]

The difference is more obvious with the new fw. There was a clear gain with it. So maybe the effect is more like 10-15% now.

 

[tumpux]

Wow, 10% increase in just 15 minutes.

 

[FredA]

Wow, 10% increase in just 15 minutes.

More like 7% i would say, whatever that means.

 

[XavierP56]

7% increase with a clock 25% price of a R7HE

 

[FredA]

Overall it is more like 15% and my clock is only a little cheaper than the r7he. 7% is for the fw upgrade and its impact on sound quality using the external clock

 

[robbie010]

Evening all!

Apologies if this is the wrong place, or if this has been covered previously but….. I have the Audio GD R8 mkii (liking it very much by the way) but has anyone found a user friendly, English language user manual?

I’ve owned it a few weeks now but daren’t try and change the settings!

Any help much appreciated.

 

[FredA]

Evening all!

Apologies if this is the wrong place, or if this has been covered previously but….. I have the Audio GD R8 mkii (liking it very much by the way) but has anyone found a user friendly, English language user manual?

I’ve owned it a few weeks now but daren’t try and change the settings!

Any help much appreciated.

Read the r7's manual. It will give you an idea of how to proceed. It's in better English.

 

[falcon70]

Evening all!

Apologies if this is the wrong place, or if this has been covered previously but….. I have the Audio GD R8 mkii (liking it very much by the way) but has anyone found a user friendly, English language user manual?

I’ve owned it a few weeks now but daren’t try and change the settings!

Any help much appreciated.

The R8 user manual from audio-gd website: http://audio-gd.com/R2R/R8mk2/R8mk2EN_Use.htm

 

[mandickay]

Hello I a newbie here. Nice to be joining such a big family of users of Andy-GD equipments here.

I am an R7 MK2 owner. I was flashing the new 2021-Oct FPGA firmware to my R7 MK2 a moment ago. However, I plugged the cable to the wrong socket. The cable should have been plugged onto socket B but I somehow made it to socket A！

I didn't notice such silly mistake and flashed the CPLD firmware "clk_sel_R7MK2_PLL_N" to it. Now my R7 MK2 DAC outputs no sound and the front panel of USB inpurt remains as 44.1 regarless of what type of audio files I played on my Windows PC.

I'd be much grateful if someone could send me the original CPLD firmware so that I could flash it to socket A and let the DAC retrieve back to its normal operation.

Many thanks

 

[DACLadder]

@mandickay You can find the Xilinx f/w here. https://onedrive.live.com/?id=636DC4E8060D66A1!557&cid=636DC4E8060D66A1

For Xilinx f/w look in "R7 MK2 Original PLL' directory. The file for header "A" in your picture should be "IIS_pro.jed". And the original PLL firmware for header "B" is 'R7_10m_clk_sel.jed".

Let us know if this works!

 

[mandickay]

@mandickay You can find the Xilinx f/w here. https://onedrive.live.com/?id=636DC4E8060D66A1!557&cid=636DC4E8060D66A1

For Xilinx f/w look in "R7 MK2 Original PLL' directory. The file for header "A" in you picture should be "IIS_pro.jed". And the original PLL firmware for header "B" is 'R7_10m_clk_sel.jed".

Let us know if this works!

Thanks for your prompt reply. You just lent me a big hand on this!

 

[mandickay]

@mandickay You can find the Xilinx f/w here. https://onedrive.live.com/?id=636DC4E8060D66A1!557&cid=636DC4E8060D66A1

For Xilinx f/w look in "R7 MK2 Original PLL' directory. The file for header "A" in your picture should be "IIS_pro.jed". And the original PLL firmware for header "B" is 'R7_10m_clk_sel.jed".

Let us know if this works!

I flashed back the "IIS_pro.jed" to header "A", the front lcd panel displays the frequency as 48.0 regardless of what type of quality of music file I played on my Windows PC. The functionality of auto-sensing the sample rates of source file failed, and no sound coming out from USB as well.

I flashed "R7_10m_clk_sel.jed" to header "B", which meants to turn both A & B Xilinx back to their originals , it did not help. The situation remains unchanged.

I then flashed both FPGA and CPLD to the latest 2021-Oct firmwares, nothing changes at all. No sound, no auto-sensing functionality of input file. I tried the IIS connectoin, and these problems remain.

I think I am having a rather serious issue here.