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Old 28th February 2012, 06:05 PM   #1
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Default Ebay Dac build! Need help on what OPAMP to use!!

HI

Edit: Deleted hole post and Changing name. I have reciverd THe dac and Rcore transformer and are building THis dac from ebaY.
Still waiting for aluminum case and other stuff.
WM8741 DIR9001 PCM2704 USB Coaxial Optical DAC Decoder,CS8421 24bit/192Khz

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Last edited by solviken; 23rd March 2012 at 02:23 AM.
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Old 28th February 2012, 06:15 PM   #2
von Ah is offline von Ah  United States
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How ironic -- I was just wondering the same thing and hope to learn from any prior experiences.
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Old 28th February 2012, 09:18 PM   #3
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I have made purchases from this seller earlier - the average stuff from CN, seller himself ships well packed and the items are as described. If you are thinking about the kit as a source of PCB and DAC chip (circa 15 eur from Farnell) , may be OK purchase. Have not built / purchased the exact lot myself however.
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Old 4th March 2012, 09:36 PM   #4
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So i ended up buying a more expensive dac, as i was unsecure about the one above!
This is the one i bought!
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Old 4th March 2012, 11:01 PM   #5
i2k92 is offline i2k92  Indonesia
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Quote:
Originally Posted by solviken View Post
So i ended up buying a more expensive dac, as i was unsecure about the one above!
This is the one i bought!
eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices
I'm interested on that module too (except for the outdated USB interface). When it arrive, could you investigate what are those empty sockets next to the DAC chip are for ?
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Old 4th March 2012, 11:52 PM   #6
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Yeah i will report back!! Yeah i was kinda bumed that it only had usb 2704.. You think its posible to change it out with 2706? or are there anything newer?
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Old 5th March 2012, 02:13 AM   #7
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The PCM2706 is not pin compatible with the PCM2704 (not even the same chip format) and it doesn't really add anything other than I2S.
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Old 5th March 2012, 02:38 AM   #8
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Whats I2S Good for?
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Old 5th March 2012, 04:42 AM   #9
i2k92 is offline i2k92  Indonesia
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Quote:
Originally Posted by solviken View Post
Yeah i will report back!! Yeah i was kinda bumed that it only had usb 2704.. You think its posible to change it out with 2706? or are there anything newer?
There are many newer USB chips that breaks that traditional USB 16bit/48Khz barrier : TE7022, CM6610 etc. But mostly they're available as USB input kit, not as a complete DAC kit (except hifimediy's CS4398 kit with TE7022). I uses TE7022 and on my system (and to my ear) it sounds better than coax.
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Old 5th March 2012, 07:28 AM   #10
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As you can see on the dac i bought the usb board is seperate from the rest of the dac. Maby its possible to change it out for a tenor board? maby make som changes to the USB tenor board and use that insted! Any thoughts?
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