6x TDA543 DAC USB Parallel Fever audio decoder - diyAudio
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Old 29th April 2017, 02:23 PM   #1
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Default 6x TDA543 DAC USB Parallel Fever audio decoder

It's $19 USD (+ about $2 s/h) from AliExpress.

It's running a fever (hot!!) so I guess that's what the heat-sink is for.

Not much detail in the description.

Anyone guess what the decoder chip may be?

Click the image to open in full size.

BTW: Aliexpress also has 4X TDA1543 version (about 60 cents cheaper)...

Click the image to open in full size.

Again, curious about the decoder IC.

Anyone care to guess?

Thx!
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Old 29th April 2017, 02:45 PM   #2
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Unfortunately these Chinese sellers often do not know a thing about what they sell. Forget about schematic.
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Old 30th April 2017, 10:45 PM   #3
guytou is offline guytou  France
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Hi Hollowman ,

I have that card , I found it sounds rather good . The USB decoder chip is marked : CM108 MMSM8 UY01PC-CS 1606 , I couldn't find any datasheet .
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Old 30th April 2017, 10:53 PM   #4
Bigun is offline Bigun  Canada
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Interesting. Did you compare with any other DACs ? perhaps you had a chance to compare with a CD player or something ?
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Old 30th April 2017, 10:58 PM   #5
guytou is offline guytou  France
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Hi Bigun , is your question adressed to me ?
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Old 30th April 2017, 11:26 PM   #6
NPower is offline NPower  Portugal
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I believe is this one (CM 108).
Attached Files
File Type: pdf CM108_DataSheet_v1.6.pdf (502.5 KB, 15 views)
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Old 30th April 2017, 11:33 PM   #7
guytou is offline guytou  France
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Thank's Npower , it is this one .
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Old 1st May 2017, 05:54 AM   #8
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Wow -- the date on that datasheet for the CM 108 is Feb 2007. And those TDA1543s are from the early 1990s.
With the USB controller, there may be ways to tweak its performance by hacking the firmware. Supposedly, that's what Gordon Rankin did with his Streamlength firmware for the ancient TAS1020B (USB decoder chip).

Nice to hear the Fever DAC sounds good.
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Old 1st May 2017, 10:16 AM   #9
guytou is offline guytou  France
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Hi , I read that interview of Gordon : Q&A With Wavelength Audio's Gordon Rankin | AudioStream .

Great guy . I don't have the knowledge to do the tenth what he did .

The CM108 is isochronous , is it ?

I found that little card with 6x1543 sounds very close to a DAC AH well tweaked . I have also a stock Soekris that I don't like , a 1x1543 , a 4x1543 , a 16x1543.... I like 1543 .
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Old 2nd May 2017, 12:39 AM   #10
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Default USB, etc.

Quote:
Originally Posted by guytou View Post
Hi , I read that interview of Gordon : Q&A With Wavelength Audio's Gordon Rankin | AudioStream .

Great guy . I don't have the knowledge to do the tenth what he did .
I'm not sure how great or awesome Streamlength (asynchronous mode USB) really is?? Rankin found a hack for the TAS1020B -- one that was not so easy to pull off.
That was 8-10 years ago.
Since then, other manuf. have used the same TAS1020B chip with their own firmware.
And some have used Tenor or Savitech decoders with adaptive mode isosynchronous. [Also see this XMOS page for their opinion]

Indeed, about 1 1/2 years ago, JarekC and I discussed this issue at some length in this thread.
Quote:
The CM108 is isochronous , is it ?
Probably. Most of the "older" USB decoders were isoch. by default (like the default/unhacked TAS1020).

Not sure about newer USB decoders (XMOS, Savitech, Tenor, etc.)?? Can they (finally) be easily reconfigured by the end use for synch/asynch., etc.
Quote:
I found that little card with 6x1543 sounds very close to a DAC AH well tweaked . I have also a stock Soekris that I don't like , a 1x1543 , a 4x1543 , a 16x1543.... I like 1543 .
Interesting that you prefer the 1543 over Soekris.
In any case, if you've hung out here at DIYA for over 10 years, you may recall that the 1543 has sort of a cult following. The 1543 was meant to be an 'Economy' DAC. But DIYers found that certain implementations yield promising results. perhaps the most famous is the parallel NOS DDDAC by Doede Douma:
Description of the DDDAC1543 project
The 1543 also made it into H-Fi Man's 602 portable DAP.
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