New Audio-gd R-7, R-7HE R-8, R-27, R-27HE, R-28 Flagship Resistor Ladder DACs and DAC/amps

[OCC7N]

...and if we look at the standard voltage 2V/RCA and 4V/XLR....R8HE mk2 has 2,5V/RCA - 5V/XLR. It could be interesting to see exactly what voltage "Fixed" is

 

[bodiebill2]

Merging is pro right, then your hapi should be set to +4dBu(reference) at this level it is still around 12dBu higher than the reference point for Consumer which is -10dBv....

Ah, interesting, so indeed it seems that the R8HE mk2 has high output for a consumer DAC.

 

[Revolution1]

I never fully understood the Hapi in this respect.

6 volts at the outputs.
http://www.pronine.ca/vdbudbm.htm

 

[DACLadder]

Kingwa has put up notice about the annual holiday sale... 7.5% off one item, 10% off combos.

LED displays are being converted from blue to while LEDs. Current stock may have a either until blue LED units are sold out..
http://www.audio-gd.com/En audio-gd.htm

 

[OCC7N]

What a year. Completing my whole setup with Audio-gd. DDC/DAC/AMP

Next stop. I hope, its the final stop. Master Clock.

Any of you thats has info/link to be more enlightened about this?

 

[gimmeheadroom]

Kingwa has put up notice about the annual holiday sale... 7.5% off one item, 10% off combos.

LED displays are being converted from blue to while LEDs. Current stock may have a either until blue LED units are sold out..
http://www.audio-gd.com/En audio-gd.htm

Nice scoop!

I'm undecided about the LED colors. The blue on my devices is slightly different from each other. During the day I don't see it, in a dark room it stands out.

I don't know if the white will be any more uniform. And blue was kind of an Audio-gd trademark look. Now they will be selling Audio-gd fakes on aliexpress and only a few guys will notice

 

[DACLadder]

@gimmeheadroom I just noticed the DI20HE LEDs are a lighter blue shade versus the HE7. The blue LEDs availability must be scarce or gone up in price.

@OCC7N Don't forget about the ACSS cables if connecting that way. The Nimak 5 (ebay) is uber expensive but the best ACSS cable I have tried. Cables make a big difference in fine tuning the sound. My system is so resolved that any changes are easy to spot. Experimentation is highly recommended once the system is well broken in..

LMR400 50 ohm coax is great (cheap) but stiff as hell. Gustard HDMI cable is a delightful surprise. OCK-1 10M clock turning out great

 

[OCC7N]

@gimmeheadroom I just noticed the DI20HE LEDs are a lighter blue shade versus the HE7. The blue LEDs availability must be scarce or gone up in price.

@OCC7N Don't forget about the ACSS cables if connecting that way. The Nimak 5 (ebay) is uber expensive but the best ACSS cable I have tried. Cables make a big difference in fine tuning the sound. My system is so resolved that any changes are easy to spot. Experimentation is highly recommended once the system is well broken in..

LMR400 50 ohm coax is great (cheap) but stiff as hell. Gustard HDMI cable is a delightful surprise. OCK-1 10M clock turning out great

Thanks I ordered the MWAY NTRL REF(magnahifi) acss cable.

For bnc/clock/75Ohm Im starting out with standard audio-gd.

For HDMI Im trying out audioquest pearl-48.

When I get more money I will upgrade if necessary.

Im just confused about the sine square part on masterclock and di20he

 

[DACLadder]

@OCC5N I'm using sine wave clock to the DI20HE and square wave to the DAC. Works just fine!

Square waves have a much faster rise time on the clock edge versus the slower sine wave. Faster rise time means less ambiguity where the transition occurs and produces less jitter in theory. Kingwa recommends square wave when available. Square waves require more system bandwidth. A 10M square wave clock with 1ns risetime will need a least 1 Ghz of bandwidth. 10M sine wave is just.... 10 Mhz bandwidth.

 

[OCC7N]

@OCC5N I'm using sine wave clock to the DI20HE and square wave to the DAC. Works just fine!

Square waves have a much faster rise time on the clock edge versus the slower sine wave. Faster rise time means less ambiguity where the transition occurs and produces less jitter in theory. Kingwa recommends square wave when available. Square waves require more system bandwidth. A 10M square wave clock with 1ns risetime will need a least 1 Ghz of bandwidth. 10M sine wave is just.... 10 Mhz bandwidth.

How to achieve the best? Not possible even though kingwa recommends, does not make sense

 

[JaMo]

How to achieve the best? Not possible even though kingwa recommends, does not make sense

Sorry to jump in. I personally prefer square wave but I am very aware of its more critical signal transfer. Connectors, cables must be true 75 or 50 Ohms. Sine wave is less critical to transfer but the sine wave has to be converted to square wave inside the receiving equipment, before entering the dac-circuits. CyberShaft use Sine waves, Mutec sends a almost perfect square wave. LHY, both, AfterDark (i don't really know but have read they can do any after the customers requests)

Even if the sine wave transfer is less critical, still different cables/connectors will give You different sound results ... So nothing new here. We have to find a mix that pleases our personal sound preferencies. There is no "one size fits all" solution.

/Jan

 

[FredA]

Sorry to jump in. I personally prefer square wave but I am very aware of its more critical signal transfer. Connectors, cables must be true 75 or 50 Ohms. Sine wave is less critical to transfer but the sine wave has to be converted to square wave inside the receiving equipment, before entering the dac-circuits. CyberShaft use Sine waves, Mutec sends a almost perfect square wave. LHY, both, AfterDark (i don't really know but have read they can do any after the customers requests)

Even if the sine wave transfer is less critical, still different cables/connectors will give You different sound results ... So nothing new here. We have to find a mix that pleases our personal sound preferencies. There is no "one size fits all" solution.

/Jan

Exactly. Tweaks and trial and error needed. Whatever sounds the best.

Indeed, Afterdark can customize the clock outputs to square/sine or 50/75ohm.

 

[OCC7N]

Sorry to jump in. I personally prefer square wave but I am very aware of its more critical signal transfer. Connectors, cables must be true 75 or 50 Ohms. Sine wave is less critical to transfer but the sine wave has to be converted to square wave inside the receiving equipment, before entering the dac-circuits. CyberShaft use Sine waves, Mutec sends a almost perfect square wave. LHY, both, AfterDark (i don't really know but have read they can do any after the customers requests)

Even if the sine wave transfer is less critical, still different cables/connectors will give You different sound results ... So nothing new here. We have to find a mix that pleases our personal sound preferencies. There is no "one size fits all" solution.

/Jan

Interesting. Thanks!

What are you recommendations on the master clock and cables for my setup?
-perfect square

R8HE MK2(75Ohm clock input)
DI20HE (10Mhz/75Ohm)

 

[gimmeheadroom]

Interesting. Thanks!

What are you recommendations on the master clock and cables for my setup?
-perfect square

R8HE MK2(75Ohm clock input)
DI20HE (10Mhz/75Ohm)

Buy cables from Thomann for a few euros to get started. They will certainly work fine. And then you have time to get something different or not.

 

[JaMo]

Interesting. Thanks!

What are you recommendations on the master clock and cables for my setup?
-perfect square

R8HE MK2(75Ohm clock input)
DI20HE (10Mhz/75Ohm)

I am using Mutec's own short (0.5m) 75 Ohm BNC cables. I bought them together with the REF10 SE120 to be sure to have good cables used with it. They are good. I am also using Swedish Military spec. 1.0m 75 Ohm and 50 Ohm BNC cables... They are also good too. Otherwise on the market... I don't know.. But search and read up and You will find a few trustworthy choices to choose from. A lter post pointed to Thomann and it is a good start. 75 Ohm is studio standard so there is a good chance to get god cables for small money. Good luck. /Jan