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  • 5 months later...
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Thanks to Dusty I saved 20% on The Feelies with the first code at this link HD Tracks code

Larry, I just noticed something odd when listening to the Feelies tracks. I am using my iMac/iTunes and the optical out to my PWD. Midi setting is 96/24. PWD sees 96. So I set the PWD sample rate to "Native" and I get a weird noise floor when I play the tracks. Sort of like white noise. It gets better (and maybe goes away completely) when I set the sample rate to 96. Can you replicate this issue?

Posted

Larry, I just noticed something odd when listening to the Feelies tracks. I am using my iMac/iTunes and the optical out to my PWD. Midi setting is 96/24. PWD sees 96. So I set the PWD sample rate to "Native" and I get a weird noise floor when I play the tracks. Sort of like white noise. It gets better (and maybe goes away completely) when I set the sample rate to 96. Can you replicate this issue?

Ok, I'll try this tomorrow after I convert the files to 24/96 ALAC with MAX and put them in iTunes. I left them as FLAC and put them on my NAS server to listen with the Bridge later. So far the few songs I tried sound fine with VLC into my DACmini via 24/96 USB, but I'll try optical from Macbook > PWD. Are you using Amara Mini or anything, or just plain iTunes? Is there a particular track that is the worst offender?

Also, I thought when you set the PWD to 96K you're really just turning on up-sampling, so the noise you're getting gets better with the ASRC active.

Posted

Larry, I just noticed something odd when listening to the Feelies tracks. I am using my iMac/iTunes and the optical out to my PWD. Midi setting is 96/24. PWD sees 96. So I set the PWD sample rate to "Native" and I get a weird noise floor when I play the tracks. Sort of like white noise. It gets better (and maybe goes away completely) when I set the sample rate to 96. Can you replicate this issue?

Sorry, but I can't replicate your problem. I just could not get a weird noise floor, like white noise, or any other artifacts. Once when we did a meet at my home and compared 6 DACs we could all hear a faint clicking noise in the background of Naamanf's Bufallo 32 DAC, although it was hard for me to hear it until I knew what to look for. However, at RMAF 2009 we heard exactly what you are describing when we fed an Apple TV 1G into a Digital Link III, and we assumed it was possibly jitter or something, since the ATV is reported to have very high levels as a transport. The ATV however sounds fine with the PWD via optical.

I'm using a late 2008 Macbook Pro with a recently installed 10.6.7 install and iTunes 10.2.2. I converted The Feelies from FLAC to 24/96 ALAC files for iTunes. Audio Midi Setup is at 24/96 optical.

Hardware used - I used an Emotiva TOSlink with good quality mini adapter to feed the PWD from the Macbook Pro. I had the PWD set for Native, showing 96Khz. I also found the 96K setting sounded the same. I auditioned it with my WES > O2 Mk1, plus Marantz 2240 and Nuforce HDP/Sigma 11 > Grado HF-2 and AKG K240M.

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