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Old 3rd January 2014, 02:54 PM   #1
Tyimo is offline Tyimo  Hungary
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Default 24Bit/96Khz on AD1865 DAC

Hi!

Is it realy possible to play 24Bit/96Khz on AD1865 DACs with CS8414 receiver?

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Tyimo
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Old 3rd January 2014, 02:57 PM   #2
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No - AD1865 is an 18bit DAC.
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Old 3rd January 2014, 03:44 PM   #3
Tyimo is offline Tyimo  Hungary
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Yes, I Know, but it was adwertised by Audionote. Forexample the Audio Note DAC Kit 1.1.
TNT : Audio Note DAC Kit 1.1 Listening Test
Quote:
AN encourage the owner to replace the Crystal data receiver with the pin-compatible CS8414, which allows for reception of data up to 96kHz and at 24 bit (sigh) word lengths. Of course, while the DAC will happily convert these data, words will be truncated (rather than dithered) to 18 bit, and the passive filter will still cut above 20kHz unless you are prepared to re-design it.
One more the 2.1:
Audio Note Hungary - DA CONVERTERS - DAC 2.1x
Quote:
Standard chassis converter, 24Bit/96KHz compatible, AD1865N chip with digital filter free 1xoversampling™ direct from disc™ technology with patented Audio Note™ I/V transformer interface and Audio Note™ digital input transformer, 6DJ8 anode follower no feedback output stage.

Last edited by Tyimo; 3rd January 2014 at 03:51 PM.
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Old 3rd January 2014, 10:07 PM   #4
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So then I don't understand your question. Seems its answered in the first quote you included.
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Old 4th January 2014, 09:21 AM   #5
Tyimo is offline Tyimo  Hungary
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So then I don't understand your question. Seems its answered in the first quote you included.
I asked because I just can not believe it.
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Old 4th January 2014, 01:58 PM   #6
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I wouldn't worry about the 18-bit AD1865's inability to convert a full 24-bits. If you already like the sound of the AD1865 with 16-bit CD, then you will gain two additional real bits from 24-bit sources, effectively making such sources 18-bit. Therefore, you could still gain about 12dB of dynamic range improvement over 16-bit sources.
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Old 4th January 2014, 03:42 PM   #7
Tyimo is offline Tyimo  Hungary
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O.K. But the another question is: what would be better with high-res music (24Bit/96Khz) playing
- let the DAC itself to convert the data
- downsampling with a software (SoX, SSRC etc.) to 16Bit/48000Khz
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Old 4th January 2014, 11:47 PM   #8
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Definitely down downgrade a hi-res file to 16bits when you have an 18bit DAC. As for whether to downsample to 48k, I'd suggest listen and see which you prefer.
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Old 5th January 2014, 06:35 AM   #9
Tyimo is offline Tyimo  Hungary
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As for whether to downsample to 48k, I'd suggest listen and see which you prefer.
Yes!
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Old 5th January 2014, 08:02 AM   #10
MaciekP is offline MaciekP  Poland
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audio note dac 2.1x with some modifications sounds much better even on 16/44 than real 24/96 straight from linn sneaky, which i use as a spdif source to AN tube dac.
24/96 through AN dac sounds good also, even if truncated to 18bit
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