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Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

Hifimediy ES9023+TE7022 24/96 USB Dac
Hifimediy ES9023+TE7022 24/96 USB Dac
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Old 23rd February 2013, 09:45 PM   #261
Neutrality is offline Neutrality  Denmark
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I am actually considering making such a board, I just do not have the time needed for making such a board at the moment.

However, there will be a Bragi MKII sometime in the future.

Changes would be getting rid of the volume pot, it is not really needed and I am not even using that option myself, I just put jumpers in instead of the pot.

So basically, remove volume pot, add AD1896 + supplies for it, change crystal to 24.576MHz, possible using U.fl connectors for the digital input. Then I would have to rearrange a few components and it should be done.

But it is just an idea I have, maybe I will have something to show a few months from now.
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Old 24th February 2013, 02:11 PM   #262
Nanoloop is offline Nanoloop  Hong Kong
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I search Taobao for ES9023. Maybe it comes to Ebay ? Maybe no.

US$30 TE7022L+ES9023 USB DAC ͬSPDIFI2S-Ա
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Old 27th February 2013, 04:56 AM   #263
Nanoloop is offline Nanoloop  Hong Kong
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I fitted Epson XG1000 50Mhz SAW to MCLK pin. The stereo space got bigger and isolator is better too. For Epson, I use power from Tenor 12Mhz with 1uF + ferrite + 100nF. I use sox resampler + KS. This is great sound from cheap parts. Amazing.
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Old 27th February 2013, 07:08 AM   #264
cogitech is offline cogitech  Canada
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Doesn't it bother anyone that the TE7022 doesn't do 88.2?

This drove me nuts until I replaced it, and I still can't figure out why they left that out.
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Old 27th February 2013, 12:07 PM   #265
soundcheck is offline soundcheck  Germany
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The TE7022 is not supporting asynchronous USB. I'm wondering if there is a similar (in terms of cost and performance) chip that runs asynchronous.

Regarding Tenor: E.g. Audio-GD pretty quickly got away from those asynch TE80xx Tenor chips, which were supposed to be even better, though more expensive , then the TE70xx ones. ( Now they use VIA Envy VT1731 - no, no XMOS)

Last edited by soundcheck; 27th February 2013 at 12:09 PM.
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Old 27th February 2013, 01:09 PM   #266
KlipschKid is offline KlipschKid
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CM6631A is asynch and not expensive.
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Old 27th February 2013, 03:11 PM   #267
cogitech is offline cogitech  Canada
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Quote:
Originally Posted by KlipschKid View Post
CM6631A is asynch and not expensive.
Indeed, and it supports every common combination of sample rate and resolution, all the way up to 192/32.

It was an easy choice for me.
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Old 27th February 2013, 04:37 PM   #268
cogitech is offline cogitech  Canada
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Quote:
Originally Posted by cogitech View Post
Indeed, and it supports every common combination of sample rate and resolution, all the way up to 192/32.

It was an easy choice for me.
BTW, soundcheck, the CM6631A works perfectly plug and play with kernel 3.7.6. Full USB2Audio mode all the way up to 192/24. Without a hitch.
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Old 28th February 2013, 09:41 AM   #269
soundcheck is offline soundcheck  Germany
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Interesting. I'd guess a 39$ DAC with async USB and some of those tweaks that's been discussed over here applied, looks like a very appealing device.
Perhaps somebody should give HifiMeDiy a hint.

Though I'm not sure if the ADUM isolator of the DAC 2 -- which seems to be doing quite a good job -- would still work with the CM6631A.

Cheers
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Old 28th February 2013, 09:44 AM   #270
soundcheck is offline soundcheck  Germany
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Quote:
Originally Posted by cogitech View Post
BTW, soundcheck, the CM6631A works perfectly plug and play with kernel 3.7.6. Full USB2Audio mode all the way up to 192/24. Without a hitch.
I'm still using my SBT Touch with Toslink out to the DDX320.

Havn't found anything better yet.

A USB dac I'd use as backup solution. But it's good to know that those work under Linux.
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