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Old 3rd February 2011, 02:43 AM   #1
Netdewt is offline Netdewt  United States
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Default Some ICs sitting around, what should I build?

OPA2132 - building a Cmoy headphone amp

What should I build with these?

PCM1794A
PCM2704
DIR9001
SRC4192
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Old 3rd February 2011, 03:06 AM   #2
singa is offline singa  Singapore
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Hi, Well all these are ICs that can be used to make a standalone DAC
with upsampler except the usb IC unless you want usb function which
may be more complex?
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Old 3rd February 2011, 03:28 AM   #3
Netdewt is offline Netdewt  United States
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I could use an SPDIF DAC at home and a USB DAC, eventually, no big rush.

I should have said, I'm really not capable of building something from scratch, I'd need some good plans, and even a PCB if available.
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Old 3rd February 2011, 04:13 AM   #4
singa is offline singa  Singapore
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Hi, I guess you have to search online but I'm not confident you will find
one that uses all the ICs you have in one circuit.If you follow the data sheets
or other similar circuits available you should be able to draw up a circuit
and send it to a pcb maker for a prototype pcb.(Although I'm not supposed
to say this, use a cracked version of eagle professional and get around the
limitation of 3 X 4 inch pcb.It's easily found in file library sites.Note there
are many versions.Pick one that says cracked with the patch file included.)
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Old 3rd February 2011, 06:59 AM   #5
alexcp is offline alexcp  United States
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Check out ezDAC.
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Old 3rd February 2011, 03:53 PM   #6
Netdewt is offline Netdewt  United States
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Hmm, looks like a good fit. How would I get a PCB made for that, though?
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Old 4th February 2011, 01:56 PM   #7
Netdewt is offline Netdewt  United States
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Ok, ezDAC still has a few boards, so that is an option. The only other board out there I can find is the Twisted Pear COD. Anyone have an opinion on which sounds better?

Shoot, I wish I had a PCM 2706 rather than a 2704, I could have done a Mute Audio Grub DAC.

Last edited by Netdewt; 4th February 2011 at 01:58 PM.
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