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Audio-Gd Master 7 - Discrete Fully Balanced DAC (PCM1704) - Page 68

post #1006 of 1957
Quote:
Originally Posted by DACLadder View Post

 

OR5/ M7 MCLK Coax cable with 75 ohm termination at the DSP header connector.  1V/div vertical scale. 300Mhz bandwidth scope

  

 

I2S Coax Cable schematic

 

 

Thanks. That's serious stuff. I'll guess I'll be having a little project on my hands.


Edited by purrin - 12/14/13 at 10:48am
post #1007 of 1957
That's some serious stuff here! Thanks for all the effort and the probably expensive oscilloscope for letting us actually "see" through what we hear.

Did anyone try the amanero board instead of the USB-32.I'm getting some seriously good sound from the Ciunas DAC now!
post #1008 of 1957
What's a amenero board link please.

Al
post #1009 of 1957

http://www.amanero.com/

 

I don't think JKenny uses the plain amanero board, he might have changed the clocks or some other parts.

The Ciunas DAC sounds darn good and the Amanero board is flawless in its operation. Same cannot be said for the USB-32 which only worked on the Squeezebox Touch after many upgrades and more than a year of wait...

 

The amanero has an i2s header which makes easy to put in the M7 (or the SA-2). I have no soldering tools here in the US (for now at least) and an oscilloscope is a must for such an experience, IMO.

It is rather cheap and can probably be tweaked easily (replace clocks, use the M7 master clock instead, etc.). Of course this involves messing with the M7, but apparently some people aren't afraid of that ;)

post #1010 of 1957
Thanks , I have an off ramp to use with it . I just wanted to know what it was. Thanks sir

Al D
post #1011 of 1957

So...


"All products built in PCM1704 chips last for sale
Reference 5.32, Reference 10.32, SA-2 , NOS-1704 less than 10 units stock.
Master 7 less than 100 units stock."

 

Is this the end for M7 ?

post #1012 of 1957
Sounds like it may be so. Better buy one , if your looking for one. I own one already .
post #1013 of 1957

Here goes the panicking rush sales of the pcm1704uk dacs again!

The last time it happened few years back had all its units sold, before a large costlier supplies of chips came back in, and up the price of pcm1704 dacs, and then a reborn of pcm1704 iteration of dacs came back till now. 

 

It could be a sign pcm1704 is going to be gone for good,  or it could be good sign something modern is already brewing behind closed doors. We shall see!

post #1014 of 1957
Or maybe another product redesign is coming for PCM1704UK units.
post #1015 of 1957
It could mean the 1704 products as we know them, and current pricing will be gone. I can't see audio-gd completely abandoning the 1704 though. Perhaps future designs and a higher price to offset the rising cost of the 1704 chips.

That's my wildly guessing, no facts involved, Head-Fi style speculation for the day.

Anyways, glad to have my SA-2
post #1016 of 1957
Quote:
Originally Posted by gevorg View Post

Or maybe another product redesign is coming for PCM1704UK units.

 

Kingwa told me they are not designing any new PCM1704UK unit because the chip won't be available anymore in the near future.

I asked him about a volume controled Master 7 and a Reference 10-SA but it's a no...

post #1017 of 1957
I asked for the valume in my m7 before I bought it . It was no
post #1018 of 1957
Quote:
Originally Posted by sayh View Post

 

It could be a sign pcm1704 is going to be gone for good,  or it could be good sign something modern is already brewing behind closed doors. We shall see!

 

Doubt it with PCM1704UK's hovering around $75 a piece (and that's only for one channel). Honestly, I wish for it, but it seems the few DAC manufacturers who actually have a clue of what "natural" sounds like, those old schoolers who still remember vinyl, are resorting to industrial DAC chips, i.e. Metrum Acoustics, maybe a few others (I'm not allowed to say).

 

Those of us who prefer the more natural presentation of R2R DACs should speak up now and demand an R2R revolution (the R2R "revival" of the past few years is not enough) before 90% of future DACs end up based on that SABRE garbage and Sony shoves DSD down our throat (although the latter seems less likely, but I do wish DSD will just fricking die.)


Edited by purrin - 12/16/13 at 9:37pm
post #1019 of 1957
I'd take the NFB-7 garbage everyday!
post #1020 of 1957
Quote:
Originally Posted by Clemmaster View Post

I'd take the NFB-7 garbage everyday!

 

+1

 

I find the Sabre32 chip to be far more neutral, revealing and true to source than any PCM1704 chipped DAC I have ever heard.

 

Personally I could not care less if the PCM1704 chips do become extinct, there is so much hype about them it is quite funny.

 

All IMO of course :popcorn:

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