Bragi, an Asynchronous ES9023 DAC with isolated I2S Input and Alps RK27 Volume pot - Page 4

merlin2069er · 07:39 PM

Is this available?

I'd like to use this along with my amanero.

Neutrality · 23rd November 2012, 03:46 PM

I have a small stack of PCBs available.

But I do not really have a BOM or to be more precise I know the sizes(housing) and values of the components used but I do not have a complete BOM with part numbers available.

So anyone buying PCBs would have to do some work on their own.

But in general, use metalfilm resistors - 5% is more than good enough, X5R/X7R ceramic capacitors, except the output filter where I used PPS film capacitors.

Neutrality · 23rd November 2012, 07:07 PM

I am thinking about making a simple add on USB module based on PCM2707C.

It would be limited to 16 bit/48 kHz but to be honest, I do not have anything above 16 bit/44.1 kHz and I really do not expect to get any material with higher bit and sample rates than that in the near future. I basically only listen to my CD collection ripped and compressed in FLAC.

It would connect directly to the I2S input male header on the DAC board through a female header mounted on the bottom of the USB to I2S board.

Neutrality · 23rd November 2012, 10:11 PM

Or I could just go with the Amanero USB I2S board, looks like it is a great little board with support for more or less everything and at 39 EUR it is cheap.

Or just stay with my Ebay TE7022L board.

Decisions, decisions.

qusp · 24th November 2012, 09:16 AM

Amanero, 2707 is more than just limited in speed, its just flat out limited full-stop and a big part of why USB audio initially had a bad name

Neutrality · 24th November 2012, 12:10 PM

Quote:

Originally Posted by qusp

Amanero, 2707 is more than just limited in speed, its just flat out limited full-stop and a big part of why USB audio initially had a bad name

You are probably right.

I am most likely going with the Amanero board, it is just too great a value.

qusp · 24th November 2012, 12:18 PM

indeed cant argue with the price that we managed to secure here with the GB, not a bad little board either. it does need a bit more filtering for the PSU (or replace it entirely since it has that option) otherwise it can let some noise through on the USB lines.

check out glt's blog, some of the execution is a bit rough, but there is some good commentary there on the amanero board and USB audio in general

22nd November 2012, 07:35 PM	#31
merlin2069er diyAudio Member Join Date: Sep 2008 Location: Toronto	Is this available? I'd like to use this along with my amanero. __________________ F5 / B1 / dcb1 / AK4396 Dac / Monica Dac / ezDac / Dynaco ST 35 / jFet BOZ / Lightspeed attenuator Last edited by merlin2069er; 22nd November 2012 at 07:39 PM.

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23rd November 2012, 03:46 PM	#32
Neutrality diyAudio Member Join Date: Oct 2004 Location: Aalborg, Denmark	I have a small stack of PCBs available. But I do not really have a BOM or to be more precise I know the sizes(housing) and values of the components used but I do not have a complete BOM with part numbers available. So anyone buying PCBs would have to do some work on their own. But in general, use metalfilm resistors - 5% is more than good enough, X5R/X7R ceramic capacitors, except the output filter where I used PPS film capacitors.

23rd November 2012, 07:07 PM	#33
Neutrality diyAudio Member Join Date: Oct 2004 Location: Aalborg, Denmark	I am thinking about making a simple add on USB module based on PCM2707C. It would be limited to 16 bit/48 kHz but to be honest, I do not have anything above 16 bit/44.1 kHz and I really do not expect to get any material with higher bit and sample rates than that in the near future. I basically only listen to my CD collection ripped and compressed in FLAC. It would connect directly to the I2S input male header on the DAC board through a female header mounted on the bottom of the USB to I2S board.

23rd November 2012, 10:11 PM	#34
Neutrality diyAudio Member Join Date: Oct 2004 Location: Aalborg, Denmark	Or I could just go with the Amanero USB I2S board, looks like it is a great little board with support for more or less everything and at 39 EUR it is cheap. Or just stay with my Ebay TE7022L board. Decisions, decisions.

24th November 2012, 09:16 AM	#35
qusp is choosing a less facetious title... diyAudio Member Join Date: Oct 2009 Location: Brisbane, Australia	Amanero, 2707 is more than just limited in speed, its just flat out limited full-stop and a big part of why USB audio initially had a bad name

24th November 2012, 12:18 PM	#37
qusp is choosing a less facetious title... diyAudio Member Join Date: Oct 2009 Location: Brisbane, Australia	indeed cant argue with the price that we managed to secure here with the GB, not a bad little board either. it does need a bit more filtering for the PSU (or replace it entirely since it has that option) otherwise it can let some noise through on the USB lines. check out glt's blog, some of the execution is a bit rough, but there is some good commentary there on the amanero board and USB audio in general