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Audio-Gd Master 7 - Discrete Fully Balanced DAC (PCM1704) - Page 157

post #2341 of 2352
Quote:
Originally Posted by ccschua View Post
 

hi frizzup

 

prior using mad scientiest neo, what was yr cable ?

Stock cable that came with the M10. Will be buying another NEO in the new year for the M7. Its a great product.

 

Frizzup

post #2342 of 2352

Here is a new USB to i2S converter:

 

http://audiobyte.net/products/hydra-z

post #2343 of 2352
Quote:
Originally Posted by preproman View Post
 

Here is a new USB to i2S converter:

 

http://audiobyte.net/products/hydra-z

Been on the rumour channel for a few weeks. Specs are solid, but no reviews in place nor pricing as far as I can see. Some Head-fi'ers tried the X version but I recall some had HDMI handshake and clipping problems. The 'Z' model is suspposed to solve those teething problems with X model. X Model was $699 no price for Z model. Still cannot buy through the e-store.

 

Watching

 

Frizzup

post #2344 of 2352
Quote:
Originally Posted by frizzup View Post
 

Been on the rumour channel for a few weeks. Specs are solid, but no reviews in place nor pricing as far as I can see. Some Head-fi'ers tried the X version but I recall some had HDMI handshake and clipping problems. The 'Z' model is suspposed to solve those teething problems with X model. X Model was $699 no price for Z model. Still cannot buy through the e-store.

 

Watching

 

Frizzup

 

You can purchase here for $1K looks like.  stereodesk.com/products/audiobyte-hydra-x

 

I had the X and sent it back because of some battery / charge issues.

post #2345 of 2352
Quote:
Originally Posted by frizzup View Post
 

My setup is

Jplay,

Audiphils Optimizer,

Windows 2012 R2 Core,

Intel I7 Control & Audio PC's

Paul Pang Clock Upgraded ASUS Motherboards

SSD's Battery powered

Meicord Cat 7 Ethernet Cable

2 x HDPlex 100W Linear Power Supplies 12V to CPU's and 19V to motherboards

Paul Pang USB V2 USB PCIE card battery powered

Double Helix USB cable

Audio-GD DI-2014, TXCO, HDMI/I2S kit installed

Wireworld V7 Silver Starlight HDMI

Audio-GD M7, with HDMI/I2S DIY Kit replacing RJ45 input

Double Helix Balanced ACSS Cables

Audio-GD M10

Mad Scientist NEO Power Cord and Inline Purifer on the M10

Terrilium-Q Black Speaker and Jumpers about to arrive to replace current NAIM NACA5 cables

Magnepan 3.7R's

 

Similar config:

 

Intel I7 Audio PC --> Mini-Client 2500 - http://atechfabrication.com/products/mini_client_2500.htm
Music Storage -->  Mass Storage 2500 - http://atechfabrication.com/products/mass_storage_2500.htm
J. River MC 20 w/ith J play,
Windows 2012 R2 Core with AudioPhile Optimizer 
TeraDek Custom Linear Power Supply 12V to PC, 12V to Storage unit, 9V to USB Card.
SOtM USB PCIE card
Cabledyne Reference Silve USB cable
Berkeley Audio Alpha USB Converter
Cabledyne Reference Silver AES Cable
Cabledyne Reference Silver XLR Interconnects
Audio-GD M7, with HDMI/I2S DIY Kit --> Audio-GD Mster 10 --> HE-6
AMR DP-777 (Duelund VSF Black Cast Capacitors) --> Eddie Current 445 --> HD800

 

 

 

post #2346 of 2352
Quote:
Originally Posted by preproman View Post
 

 

Similar config:

 

Intel I7 Audio PC --> Mini-Client 2500 - http://atechfabrication.com/products/mini_client_2500.htm
Music Storage -->  Mass Storage 2500 - http://atechfabrication.com/products/mass_storage_2500.htm
J. River MC 20 w/ith J play,
Windows 2012 R2 Core with AudioPhile Optimizer 
TeraDek Custom Linear Power Supply 12V to PC, 12V to Storage unit, 9V to USB Card.
SOtM USB PCIE card
Cabledyne Reference Silve USB cable
Berkeley Audio Alpha USB Converter
Cabledyne Reference Silver AES Cable
Cabledyne Reference Silver XLR Interconnects
Audio-GD M7, with HDMI/I2S DIY Kit --> Audio-GD Mster 10 --> HE-6
AMR DP-777 (Duelund VSF Black Cast Capacitors) --> Eddie Current 445 --> HD800

 

 

 

@__@ could you plz tell us how much for that custom psu, really want one T__T

post #2347 of 2352

Just out of curiosity, has anyone here pitted their Master 7 against a Metrum Hex? If so, how do they compare?

post #2348 of 2352

This morning my system sounded thin with light bass.  I thought I was listening to the old USB32 firmware.  Removing the M7 PLL bypass and immediately bass returned to full level. 

 

PLL bypassing is an interesting experiment.   When dialed in sounds good.  But something slipped today! 

 

The Audiobyte Hydra Z is an interesting design.  Dual clock domains where jittery data is fed into a large buffer array and then clocked out with ultra-stable oscillators. 

 

Edit: PLL bypassed for 2nd try.  Sounds OK.  Not sure what happened yesterday.  I tried different sampling rates but the same.  Perhaps the components woke up in a strange state.  Will monitor...   


Edited by DACLadder - 12/6/14 at 7:55am
post #2349 of 2352

Hi all

 

I have a Grado PS1000 with the reference 10.32, happy with it, but wonder how far better the master 7 plus master 9 would be; has anyone been able to compare, is the difference just a margin or quite significant?

 

Regards

Vincent

post #2350 of 2352

Is it possible to replace feet on M7? Maybe someone have experience in it?

post #2351 of 2352
Quote:
Originally Posted by DACLadder View Post


@DACLadder 

 

What's the difference in your HDMI board and the HDMI kit Kingwa is selling - Different pin out or???

post #2352 of 2352
Quote:
Originally Posted by preproman View Post
 


@DACLadder 

 

What's the difference in your HDMI board and the HDMI kit Kingwa is selling - Different pin out or???


They are almost identical as far as I can tell with the circuit.  But function the same.  With minor differences here is what I can determine...

 

-- Different HDMI receiver chip.  I used the TI SN65LVDS348 and AGD some type of 048 receiver.   The 348 is a later designed chip with a wider input DC offset range.  Both chips are pin compatible.

-- Power supply filter components are different type.  I used ceramic bypass capacitors and AGD uses the familiar red WIMA type caps.  My board uses a ferrite bead for input the inductor while AGD has a coil.

-- HDMI Input termination.  I use 100 ohm termination while AGD uses 120 ohm resistors.

-- I used two ground connections - one for power and one for the signals versus a single ground wire for the AGD supplied kit.

-- I2S output pinout appears the same.

-- I used silver plated wires with Teflon insulation on my cables.  Not sure on AGD.

 

But again the circuit is very much identical.  You can argue the differences (components, board layout, connections).  AGD certainly had more time to optimize their design.  More than likely sound very much alike but haven't compared the AGD board.

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