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Old 5th January 2014, 08:24 AM   #11
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From what I can gather, the Sneaky DS is using WM8740 as the DAC chip. No surprises at all its soundly trounced by practically anything multibit.
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Old 6th January 2014, 10:22 PM   #12
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I use an XMOS usb->spdif converter and have everything upsampled (JRIVER) to 96khz for use with my AD1865 dac. The sound is fantastic. There's a few threads over at audio asylum discussing why this sounds preferable to the 44.1 with the CS8414.

I also have an I2S AD1865 (Pavouk designed it - you can see the circuit on his site) which happily plays 24/192khz (as noted 24 bits is truncated), which sounds even more pleasing than the spdif implementation.

The only thing I can't really settle on is the iv resistors....I either have them too small (<82R) and need a line stage which muddies the sound, or too large (>200R) directly driving a power amp and the sound isn't as detailed.

At any rate, it seems far more important to get the iv stage correct than the bitrate or the sampling rate as the difference there is not as significant.

Look forward to hearing more about your experimentation.
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Old 7th January 2014, 05:34 PM   #13
Tyimo is offline Tyimo  Hungary
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Hi Lordearl!
Thanks for the info. Soon I will try it.
I have a DAC-End 1865 with a tube I/V stage and a Weilang 24/96 USB-Spdif converter. I also use foobar, Jriver and Daphile.
Another question: What is your Dac's output impedance with the passive I/V???
Greets:
Tyimo
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Old 8th January 2014, 11:03 AM   #14
Tyimo is offline Tyimo  Hungary
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Quote:
There's a few threads over at audio asylum discussing why this sounds preferable to the 44.1 with the CS8414.
Could you show the links please?
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Old 8th January 2014, 12:13 PM   #15
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Here's a start. thttp://www.audioasylum.com/cgi/t.mpl?f=digital&m=18814
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Old 8th January 2014, 12:54 PM   #16
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The link works if you manually delete the first 't'.

I guess by 'BB1704' he's meaning the PCM1704. I reckon the reason it sounds worse is its higher glitch than the ADI part. After all, at the very least in a 24bit DAC there are 6 more switches than in an 18bit one. The AD part also adopts a segmented architecture for the MSBs, whereas BB appear to have designed their 'Co-Linear' architecture with linearity in mind rather than glitch - running two 23bit DACs internally almost doubles the number of switches.
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Last edited by abraxalito; 8th January 2014 at 01:02 PM.
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Old 8th January 2014, 01:00 PM   #17
Tyimo is offline Tyimo  Hungary
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Thanks!
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