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Audio-Gd Master 7 - Discrete Fully Balanced DAC (PCM1704) - Page 112

post #1666 of 2303

By pinout change, are you talking about conversion to HDMI I2S input?  If so, I'll be interested to see how that little modification works out for you.

post #1667 of 2303
Quote:
Originally Posted by jacal01 View Post
 

By pinout change, are you talking about conversion to HDMI I2S input?  If so, I'll be interested to see how that little modification works out for you.

No, I mean changing the pinout of the RJ45 header. I want to evaluate the sound first to see if I want to get the HDMI board.

post #1668 of 2303

Okay.  I can wait...  :wink:

post #1669 of 2303

For those who are using external USB to S/PDIF converters like the Offramp and so forth, do you bypass the PLL on the DSP-1 or keep it engaged?

 

Thanks

post #1670 of 2303

Keep PLL on. The DSP-1 really needs the PLL on regardless of the use of the OR or other USB to i2s / SPDIF converter.


Edited by purrin - 5/3/14 at 4:31pm
post #1671 of 2303
Quote:
Originally Posted by Clemmaster View Post
 

Got the OR5 since Thursday. Really liking what I'm hearing with the SA-2 so far.

Mind you, I've been using the Coax output only. I just did the I2S pinout change, it is working great but it's in my desktop setup right now...

 

Glad to see you've finally broken down and bit the bullet. Don't forget the meet coming up!

post #1672 of 2303
Quote:
Originally Posted by purrin View Post
 

 

Glad to see you've finally broken down and bit the bullet. Don't forget the meet coming up!

It's on my agenda, no worries :beerchug:.

I got to test the Offramp using I2S. The difference is subtle but noticeable in serious listening (in bed, lights off, eyes closed). I'm using a cheap 2ft CAT5E cable for now but I can appreciate the increase in details (bass and treble first) and stability versus the Coax input 1.

 

It is getting closer and closer to THE sound I got with the NFB-27 but this one still remains my reference in terms of what imaging and "being there" feeling can go.

I think I really just reached an excellent level of technicalities with that DAC and its USB-32 input (firmware #3: much better tonal accuracy than the newer ones, IMO) that even the SA-2 + OR5 can't reach (It is on the very same setup: SA-31 + HE-5LE). Let's see if an external PSU for the OR5 can raise the bar closer still.

 

I didn't notice a dramatic change is soundstage (like being more 3D) with i2s vs. coax - which was readily apparent when we did the A/B with the M7 - so I suppose the M7 has just a better depth rendition than the SA-2.

 

 

 

 

Regarding the DSP settings, do you guys know what the "bypass" at the top is?

post #1673 of 2303
Quote:
Originally Posted by Clemmaster View Post
 

Regarding the DSP settings, do you guys know what the "bypass" at the top is?

 

 

I believe that it is related to the oversampling setting:

http://www.audio-gd.com/Pro/dac/DSP1/DSP1ENspecs.htm

 

Bypass jumper ON (your picture) = Oversampling ON

Bypass jumper Off = Oversampling Off (NOS mode)

 

I made several experiments with my A-GD Reference One a long time ago and found the default settings (Oversampling ON, 8x) to be the best.


Edited by seaice - 5/4/14 at 2:41am
post #1674 of 2303

Bypasses the DSP for NOS. Another way to do "NOS" is the 1x oversampling setting, but this does not bypass the DSP.

 

It's an interesting sound, tonally denser with loss of resolution. Default settings are best IMO. Bypassing the DSP will not work with the OR5 i2s, but it will work with the OR5 SPDIF via coax.

post #1675 of 2303

Just got and installed the short block from empirical audio. Definitely doing something, but it's hard to point at exactly what. Most immediate thought is better imaging and more definitive separation. I've not really had much time to listen though, so will post back in a few hours/days. Now i just need to save up for an off-ramp...

post #1676 of 2303
Quote:
Originally Posted by AMBERLIGHT View Post

There should be a noticible improvement in treble clarity
And bass detail or slam. If not it's because your USB cable might be good already in helping with noise
What USB card do you have or just motherboard
Type ?
Al

 

It does sound like some grunge/noise has been removed and it's easier to hear subtle details. I'd already taped the 5v and ground on my usb a long while ago, but this still is making an improvement by making things more 3d in presentation. Prat is more consistent now too. I know i'm not returning it. It effects electronic types of music pretty drastically for me, but that's mostly down to the limitations of my speakers I believe. 

post #1677 of 2303
Ok that is why there is a improvement but not as much as some hear. The 5 volt is a big one . Either way for 200 it's worth a try .
Enjoy Also sorry I am alrainbow my daughter who whe she visits uses my stuff left the log in and I did not see it.
She is AMBERLIGHT
Al
post #1678 of 2303
Quote:
Originally Posted by blitzxgene View Post
 

Just got and installed the short block from empirical audio. Definitely doing something, but it's hard to point at exactly what. Most immediate thought is better imaging and more definitive separation. I've not really had much time to listen though, so will post back in a few hours/days. Now i just need to save up for an off-ramp...


Still waiting for my Short Block ordered on March 1, 2014...  I'll be patient for another week.   But glad you got the Short Block up and running... S 

post #1679 of 2303
Quote:
Originally Posted by DACLadder View Post
 


Still waiting for my Short Block ordered on March 1, 2014...  I'll be patient for another week.   But glad you got the Short Block up and running... S 

I figured you would of gotten yours by now. I sent him an email maybe a week ago threatening to wait longer. I guess he wasn't having that.

post #1680 of 2303
I am sorry to hear that dacladder. It will make an improvement . Have you tried a PPA USB card with a batter or linker PSU yet. It should give you a big boost as well
Al
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