iFi Audio Nano iDSD discussion + impression
Feb 12, 2015 at 10:48 AM Post #1,216 of 2,063
Does the Nano support 32 bit floating point data, as that is how Coppertino say delivers data to a DAC if the DAC supports it. It seems DoP may not be ever be possible with Vox, although they are trying to figure it out.

 
Hi,
 
Yes, the iDSD nano does support 32 Bit.
 
The Integer mode (it is called INTEGER, not Float) bypasses the whole floating point layer:
 
http://www.amr-audio.co.uk/large_image/MAC%20OSX%20audio%20players%20&%20Integer%20Mode.pdf
 
Hope this answers.
 
Cheers.
 
iFi audio Stay updated on iFi audio at their sponsor profile on Head-Fi.
 
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Feb 13, 2015 at 3:51 AM Post #1,217 of 2,063
It seems DoP may not be ever be possible with Vox, although they are trying to figure it out.

 
Hi,
 
It is possible to convert DSD Files to a so-called DoP-FLAC/ALAC File.
 
In this case the DoP encoding is part of the file. This way DoP DSD can be played on any player that supports FLAC/ALAC and is bitperfect (even iTunes can then play DSD).
 
Two examples of such tools are Dsdmaster for Mac (paid for) or the "DSD to PCM Converter"  by Yuki San which is free and can encode DoP with various markers, but requires Windows.
 
DoP-FLAC with DSD to PCM converter is one way to get native DSD playback on Sony Xperia Z2/3 series Phones and Tablets using the internal "Sony Walkman"  Player rather than third party playback apps. This is what how we do it on the Sonys.
 
If you need support for Dsdmaster, this will have to come from the software vendor.
 
http://members3.jcom.home.ne.jp/yuki_san/

http://dsdmaster.blogspot.ca/p/what-is-dsd-master.html
 
Hope this helps.
 
iFi audio Stay updated on iFi audio at their sponsor profile on Head-Fi.
 
https://www.facebook.com/people/IFi-audio/61558986775162/ https://twitter.com/ifiaudio https://www.instagram.com/ifiaudio/ https://ifi-audio.com/ https://www.youtube.com/@iFiaudiochannel comms@ifi-audio.com
Feb 13, 2015 at 9:53 AM Post #1,218 of 2,063
Hey all, I have had the Nano for a while and traded for an Apex Audio Glacier, now using an audio brick. My iPhone to the Nano, Cardas RCA TO 1/8" to Grado PS500e or Alclair Reference!!! Audio bliss!!!!!
 
Feb 13, 2015 at 9:56 AM Post #1,219 of 2,063
Hey all, I have had the Nano for a while and traded for an Apex Audio Glacier, now using an audio brick. My iPhone to the Nano, Cardas RCA TO 1/8" to Grado PS500e or Alclair Reference!!! Audio bliss!!!!!


Another Alclair owner. Did you get your impressions from the Alclair -Tennessee shop?
 
Feb 13, 2015 at 4:01 PM Post #1,220 of 2,063
Connected the Nano directly to my Synology DS211+ NAS, started Audiostation on the Synology, choosing USB speakers as output and voila! FLAC up to 192kHZ to my headphone (or amp via cinch) without the need to install drivers.
 
Feb 15, 2015 at 4:53 AM Post #1,221 of 2,063
Calling iCLUB members:
 
 
nano/micro iDSD or Retro - BETA firmware v0.16 Beta
 
User Note:
The following is for experienced computer users - if you do not feel comfortable, please do not attempt.



Please find attached the latest beta firmware for the micro iDSD (suitable for nano iDSD and Retro also but not other iFi components).

Beta v0.16 is the same as v4.06, but:

1) Upgrade core code to version 6.6

2) Apply previous Clock and Code optimisation to 6.6 core

3) Fix completely clicks when switching between PCM and DoP DSD

4) Fix for some units where small timing bug on v4.06 caused vinyl static like clicks at 192kHz sample rates

So the key change is an upgraded version of the core code and bug fixes.


Background to the DoP "pop"
When the DSD signal is sent as DoP the DoP Standard requires to switch to DSD after a large number of DoP markers have been received, so there is delay when starting the track between receiving PCM and recognising DoP DSD. This is inherent to the DoP standard and is handled in some software via "Play little silence".

If this is not done the DAC may have unmuted on the PCM signal (which is not Audio) and is then forced to change format, but the format from the USB Section has already changed, so it does a "pop pop" .

Version 4.06 minimised the occurrence of these big bangs.

To summarise, the DoP "pop" is a DoP issue, which is fixed in a number of software packages and which affects a fair few DACs, but we decided not to rely on the Software Developers to reiolve this upstream issue but fix it in the DoP implementation.

This is the BETA version so it is not for public dissemination as there may be addition revisions before the formal release.

Please do not hesitate to ask - if you have any questions.
 
iFi audio Stay updated on iFi audio at their sponsor profile on Head-Fi.
 
https://www.facebook.com/people/IFi-audio/61558986775162/ https://twitter.com/ifiaudio https://www.instagram.com/ifiaudio/ https://ifi-audio.com/ https://www.youtube.com/@iFiaudiochannel comms@ifi-audio.com
Feb 16, 2015 at 4:52 AM Post #1,224 of 2,063
The update firmware that I see on the site of iFi can also be done for the Nano iDSD? Worth or is it better to wait for the final one?

 
Don't. Nano and Micro iDSD run on different firmware. Mixing them up will brick your iDSD in no time.
 
Feb 16, 2015 at 4:56 AM Post #1,225 of 2,063
As stated on IFI audio web site:
 
Caution:
• Do not use the following firmware on any other iFi product not listed above.
• The micro iDSD firmware and the nano iDSD firmware are NOT the same.
• Under NO circumstances should you update the nano firmware on the micro or vice versa.
• Otherwise, there is risk of damage to the respective unit and of voiding your warranty.
• As the iFi XMOS firmware is heavily customized by iFi in-house, do not attempt to use this firmware on any other XMOS platforms.

 
Feb 16, 2015 at 8:18 AM Post #1,227 of 2,063
n the site of iFi sound is said however in the instructions which can be used for micro- and nano ......

 
Hi,
 
For the iCLUB peopel who are testing the latest BETA firmware v0.16 it is definitely possible to flash on the:
 
nano iDSD
micro iDSD
Retro Stereo 50 (launch is very soon)
 
But NOT on the other iFi products such as the iDAC and iLINK.
 
We have to err on the side of caution because we have sold more than a few iDACs and iLINKS and dont wish people to brick their machines.
 
Our customers get excited when iFi annouce anything and they really go like a bat out of hell!
 
Hence we state this to get people to ask us - first to clarify.
 
Further information from the iFi technical support team - so open a ticket and ask away.
 
iFi audio Stay updated on iFi audio at their sponsor profile on Head-Fi.
 
https://www.facebook.com/people/IFi-audio/61558986775162/ https://twitter.com/ifiaudio https://www.instagram.com/ifiaudio/ https://ifi-audio.com/ https://www.youtube.com/@iFiaudiochannel comms@ifi-audio.com
Feb 16, 2015 at 1:34 PM Post #1,228 of 2,063
   
Hi,
 
For the iCLUB peopel who are testing the latest BETA firmware v0.16 it is definitely possible to flash on the:
 
nano iDSD
micro iDSD
Retro Stereo 50 (launch is very soon)
 
But NOT on the other iFi products such as the iDAC and iLINK.
 
We have to err on the side of caution because we have sold more than a few iDACs and iLINKS and dont wish people to brick their machines.
 
Our customers get excited when iFi annouce anything and they really go like a bat out of hell!
 
Hence we state this to get people to ask us - first to clarify.
 
Further information from the iFi technical support team - so open a ticket and ask away.

More than happy to be a crash test dummy, but more head-fi'ers will participate if you update your website accordingly, people are anxious to brick their DAC.

"3 Steps: Micro iDSD Firmware Upgrade"

It's stated also that beta 0.16 is the same as version 4.06, but the latest Nano version is 4.02...
"Beta v0.16 is the same as v4.06, but:
1) Upgrade core code to version 6.6
2) Apply previous Clock and Code optimisation to 6.6 core
3) Fix completely clicks when switching between PCM and DoP DSD
4) Fix for some units where small timing bug on v4.06 caused vinyl static like clicks at 192kHz sample rates"

 
Feb 16, 2015 at 2:21 PM Post #1,229 of 2,063
  More than happy to be a crash test dummy, but more head-fi'ers will participate if you update your website accordingly, people are anxious to brick their DAC.

"3 Steps: Micro iDSD Firmware Upgrade"

It's stated also that beta 0.16 is the same as version 4.06, but the latest Nano version is 4.02...
"Beta v0.16 is the same as v4.06, but:
1) Upgrade core code to version 6.6
2) Apply previous Clock and Code optimisation to 6.6 core
3) Fix completely clicks when switching between PCM and DoP DSD
4) Fix for some units where small timing bug on v4.06 caused vinyl static like clicks at 192kHz sample rates"

 
Hi,
 
Nice spot!
 
v4.02 is the latest official firmware for the nano iDSD
v4.06 is the latest official firmware for the micro iDSD
 
BETA v0.16 is for both the nano iDSD and micro iDSD (and also soon-to-be launched Stereo 50).
 
 
 
Originally (a few years ago) we used the XMOS chipset and was reliant on the XMOS software.
 
But as we knew the XMOS chipset was under-utilised, over time, we brought this in-house which has enabled us in Subaru WRX terms to do a ProDrive and "remap"  the XMOS chipset (as evident from the Quad DSD256 and Octa-DSD512/768kHz levels attained).
 
Our code is now 100% in-house; and soon all iFi products will move over to the same, iFi XMOS firmware platform.
 
The upcoming iDAC2 will of course also run on this same iFi coded platform.
 
Cheers.
 
iFi audio Stay updated on iFi audio at their sponsor profile on Head-Fi.
 
https://www.facebook.com/people/IFi-audio/61558986775162/ https://twitter.com/ifiaudio https://www.instagram.com/ifiaudio/ https://ifi-audio.com/ https://www.youtube.com/@iFiaudiochannel comms@ifi-audio.com
Feb 16, 2015 at 2:37 PM Post #1,230 of 2,063
   
Hi,
 
Nice spot!
 
v4.02 is the latest official firmware for the nano iDSD
v4.06 is the latest official firmware for the micro iDSD
 
BETA v0.16 is for both the nano iDSD and micro iDSD (and also soon-to-be launched Stereo 50).
 
 
 
Originally (a few years ago) we used the XMOS chipset and was reliant on the XMOS software.
 
But as we knew the XMOS chipset was under-utilised, over time, we brought this in-house which has enabled us in Subaru WRX terms to do a ProDrive and "remap"  the XMOS chipset (as evident from the Quad DSD256 and Octa-DSD512/768kHz levels attained).
 
Our code is now 100% in-house; and soon all iFi products will move over to the same, iFi XMOS firmware platform.
 
The upcoming iDAC2 will of course also run on this same iFi coded platform.
 
Cheers.

Thanks for the clarification, ticket raised!
 
With the WRX ECU mapping comparison you are appealing to my other hobby, happy Subaru WRX STI driver  :wink:
 

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