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iFi Audio Nano iDSD discussion + impression - Page 19

post #271 of 1711
Quote:
Originally Posted by koolas View Post

I have mentioned that in PM to iFi, but I want to repeat myself here. The iDSD sometimes stops outputting analogue signal to RCA outputs. I had that feeling that it usually happens when mode is changing either to/from higher sample rate or PCM - DSD - DXD. One may try to turn iDSD off and disconnect USB cable for few seconds, plug it to different USB port in your computer and then connect it back and turn iDSD on. This helped me most times. Also playing DSD128 material in Foobar and then switching to PCM sometimes helps. Also helped if I rebooted in Linux and used Jack at 352.8 sample rate, play some tack, and then then restart Jack at 44.1 sample rate, and stop Jack and reboot in Windows.

For me it sounds like iDSD supports hardware volume control or mute function and that get stuck in some memory of iDSD, or I also thought maybe PCM and DSD are decoded by two different DACs and the switching between them sometimes sticks. I have also had situation that Foobar was able to play DSD128 file fine, but couldn't switch back to PCM. I had rebooted the box several times then, with no success, I booted in Linux, then in Windows and finally I got it working again.

sounds like a windows problem to me. 

 

hopefully you'll be able to figure out the issue...

post #272 of 1711
Quote:
Originally Posted by kugino View Post

sounds like a windows problem to me. 

hopefully you'll be able to figure out the issue...

I think I experienced that on Linux a well...
post #273 of 1711
Quote:
Originally Posted by koolas View Post

I think I experienced that on Linux a well...
I thought ifi mentioned somewhere In this thread that Linux support was spotty...have to look through those posts.
post #274 of 1711
Quote:
Originally Posted by kugino View Post


I thought ifi mentioned somewhere In this thread that Linux support was spotty...have to look through those posts.

I noticed that once on my Windows 7 - turned the DAC off and then back on - restarted the software and all was good.

post #275 of 1711
Quote:
Originally Posted by earwaxxer View Post
 


I have some HDTracks downloads in 24/96 and I cant really notice that much, if any difference. Two favs. being 'Band on the Run' and 'Raising Sand'. Thats pretty much been true for every DAC I have experience with. I dont have any DSD files. Upsampled to DSD/high res. using JRiver sounds the same as allowing the iDSD to handle the job.

Thanks for the feedback, so far I've not been impressed with redbook or redbook upsampled to 24/96 and was thinking of trying a DSD DAC 

post #276 of 1711
Quote:
Originally Posted by koolas View Post

I have mentioned that in PM to iFi, but I want to repeat myself here. The iDSD sometimes stops outputting analogue signal to RCA outputs. I had that feeling that it usually happens when mode is changing either to/from higher sample rate or PCM - DSD - DXD. One may try to turn iDSD off and disconnect USB cable for few seconds, plug it to different USB port in your computer and then connect it back and turn iDSD on. This helped me most times. Also playing DSD128 material in Foobar and then switching to PCM sometimes helps. Also helped if I rebooted in Linux and used Jack at 352.8 sample rate, play some tack, and then then restart Jack at 44.1 sample rate, and stop Jack and reboot in Windows.

For me it sounds like iDSD supports hardware volume control or mute function and that get stuck in some memory of iDSD, or I also thought maybe PCM and DSD are decoded by two different DACs and the switching between them sometimes sticks. I have also had situation that Foobar was able to play DSD128 file fine, but couldn't switch back to PCM. I had rebooted the box several times then, with no success, I booted in Linux, then in Windows and finally I got it working again.

 

Hi Koolas,

 

Please do keep to emails to:

 

tech@ifi-audio.com

 

including screenshots especially as this helps immensely.

 

Otherwise this thread gets clogged up with lots of technical support and everybody chiming in but nobody knowing your full system (including us!).

post #277 of 1711
Quote:
Originally Posted by koolas View Post

I would like to know what is the characteristics of the output filter in DSD mode? Is DSD converted back to n-bit and digital filter is applied before output?

 

The DSD signal is left untouched as pure single bitstream and no digital filtering is applied.

 

As per the instruction card, the two analogue filters are user-selectable, with different amounts of filtering of the ultrasonic noise.

 

The Standard filter filters more steeply.


Edited by iFi audio - 2/20/14 at 10:14am
post #278 of 1711
Quote:
Originally Posted by REXNFX View Post
 

Thanks for the feedback, so far I've not been impressed with redbook or redbook upsampled to 24/96 and was thinking of trying a DSD DAC 

Thats kind of where my thinking was going as well. I liked what I was hearing when I manipulated my 16/44.1 to 24/96 then 24/192 when the technology became more available, so I figured I would try DSD as well. Lets face it, I have a TON of 16/44.1. It means nothing to me that native high res and DSD sounds great etc. I'm not re-buying my entire collection. What was a bit unexpected with the iDSD is that it handles PCM very nicely. I have ceased running to my trusty SoX upsampler with the use of min phase, etc. I just really like the sound of the silicon in this kit. I'm sure its more than that, but who cares...

post #279 of 1711
Quote:
Originally Posted by limahuli View Post
 

Is there an ETA for the USB 3.0 firmware update? My iDSD no longer outputs audio from any of my Macs, including a Mavericks/10.9.1 Mac Mini, a new 10.9.1 MacBook Pro or an older Mac Pro 10.8.6 tower (the latter is USB 2.0). 

 

Actually, the laptop outputs audio, but it's full of static and dropouts, and after about 10 seconds it quits entirely. 

 

I've tried JRiver, iTunes, Cog, Decibel, YouTube videos via the browser, everything. Silence via RCA outs and headphones. 

 

The unit still works on iOS devices, btw. 


Hi, exact same thing thing here.

Brand new nano iDSD, MBP retina late 2013, Mavericks 10.9.1 : Lots of static, dropouts and jitter, whatever the player or the source. It stops playing DSD after 10s.

No artifacts on integrated mac output.
If its a USB 3.0 problem, I hope ifi will find a solution or the nano will be unusable for me, the MBP being my only source…

post #280 of 1711

any of you guys who are having problems with the usb 3.0 port have a powered usb 2.0 hub that you can use in the meantime? does using the usb 2.0 hub work for you?

post #281 of 1711

same thing for me with an intermediate 2.0 usb hub :-(

post #282 of 1711

This seems to be poor testing on the part of iFi. Not a good sign. The stuff needs to work, at the basic minimum.... I mean, I can dump my gripes here about other DAC's that I own, mostly from blown outputs that were not addressed when I sent the unit in for 'repair'. The repair was not done. They still continued to, and did initially 'work'. I have a real problem with a piece that just doesnt work. From the get go. I returned such a piece just this week. A coax to toslink converter. Just flat out didnt work. Back it goes... Pisses me off - waist of time...

post #283 of 1711


With that said above, the field of 'computer audio' is fraught with danger. Crap that doesnt play well with other's etc. Software that glitches, Crap I just realized that I have this 'short circuit' that occurs wihen I have an electrical connection with my sub woofer DAC's and amps. The work around... I'm going with a coax to optical converter from the iDSD to my sub equipment. This is not unique to the iDSD BTW. I believe that this issue is what burned out some of the outs on my other DAC's - BNC on the Wryd and the coax on the Transporter. Its complicated folks - its worth it though.. Of course I'm coming from the age when we used to run code on punch cards!

post #284 of 1711

Have my iDSD for few weeks, love the DSD sound with DSD64/128. I also have the Schiit Loki and Centrance Hifi M8 LX, but like the analogue smoothness of the iDSD better over all the other.

 

Of course iDSD does not have much power, so need to put it through an external amp to power bigger headphones, builtin amp is fine for IEM's or smaller headphones.

 

Had problems with no audio on my MacBook Pro Retina running Mavericks  with Audiorvana few times, each time it turns out the Mac the Audio MIDI panel shows the Mac has muted the volume on this device and this mute setting typically survives a reboot or unplug and re-plug of the device.

 

Simply unmute the volume in Audio MIDI and everything is fine, have seen this same problem sometimes with Centrance Hifi M8 as well.

 

On my MAC the Audio MIDI control panel sometimes hangs (seems like an Apple bug), a force kill cures this issue.

 

Hope it helps somebody here, don't think this is an iDSD issue at least on the MAC.

post #285 of 1711

I think that what alemen is saying above is a good indication of what to expect form doing this computer audio stuff. What I think we can all expect is that the stuff we have to mess with and tweak with should NOT cost an arm and a leg. Thats the whole point. A mature product that  does everything perfectly, even though it is far less than ideal will take time to develop, and by then its obsolete.

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