[FredA]

Other fans of 3.993 out there?

I have been glued to my chair in the listening room every night since if i have flashed it. It's addictive. I am worried the memory foam i am sitting on will contract Alzheimer sooner than later. Etheral treble it has. So evident on this old Duke Ellington record i play two-three times a week.

For obvious reasons, we all need to evade these days. This hobby is quite the remedy until something better. Jazz musicians are the freest there are, so this is inspiring. They don't ask permission, they just are.

 

[jazzbug]

agree I still come back to 3.993 after testing all other FW.
It has bit more body, bass and darker background, though it does compromise with high, details, openness.
Wish it could combine the goodies with other FW, for now I'm happy with 3.993 analogue sound.

 

[roni44]

Still rocking 3.993 with Ext. GPSDO, very rewarding experience.

 

[marcelnl]

I agree to the point of KingWa being an audiophile designer, which is rare as mostly designers are number crunchers. I am following what he is doing for quite a while now. I fail however to see that zero feedback amps are his innovation, they have been around for decades, close to a century now. Or were you indicating that his implementation is an innovation?

 

[rsbrsvp]

I have switched from 3.993 to 4.075 and 4.076 and then back t0 3.933 several times.

The 4. FW's are to to soft to my ears. 3.993 has punch, weight and resolution. NO COMPARISON.....

 

[FredA]

I agree to the point of KingWa being an audiophile designer, which is rare as mostly designers are number crunchers. I am following what he is doing for quite a while now. I fail however to see that zero feedback amps are his innovation, they have been around for decades, close to a century now. Or were you indicating that his implementation is an innovation?

Yes, as for power amps, what Kingwa calls linear fideality seems innovative to me . A design is a recipe, it the whole that matters. It has to have synergy between the design elements. This takes creativity and excellent focus on the target you are aiming at. So the beauty of a design is often in how you combine the elements. I am a sw designer myself.
With a non feedback amp, you have be clever to manage distorsion. The most important is to keep it very low in the upper range, where the human ear is most sensitive.
I think Kingwa has a huge preference for non feedback as an audiophile. My own experience is that they are the smoothest.

 

[pacomsa]

I don't know which usb port you connect too. There are two types. The blue ones are usb3, try a usb 2. As someone said earlier, in volumio's backback menu, the i2s dac box should NOT be checked.

Thank you for the answers. I have checked with all four usb ports, with different Ropieee configurations, different Roon configurations, Volumio configurations, but haven't hit the right one yet....

Thanks again for all the answers.
After several attempts which included using a new Raspberry Pi, replacing the DI20 with my old Matrix SPDIF convertor, changing cables, all with the same result, I plugged in the Mac to the DI20 and could finally listen to music...
Any ideas on why the raspberry is not able to communicate to the DI20 (or the Matrix)?
Cheers

 

[FredA]

Thanks again for all the answers.
After several attempts which included using a new Raspberry Pi, replacing the DI20 with my old Matrix SPDIF convertor, changing cables, all with the same result, I plugged in the Mac to the DI20 and could finally listen to music...
Any ideas on why the raspberry is not able to communicate to the DI20 (or the Matrix)?
Cheers

Can't see anything but configuration. In volumio, there is a save button for each setting section. Be sure to press on it after changing something.

 

[pacomsa]

Can't see anything but configuration. In volumio, there is a save button for each setting section. Be sure to press on it after changing something.

I agree with you... I have tried different configurations with Roon and Volumio but haven't hit the right one yet... any suggestions?

 

[FredA]

Have you tried playing music from a usb stick or drive? This should help with finding the issue..

 

[Jandu]

Thanks again for all the answers.
After several attempts which included using a new Raspberry Pi, replacing the DI20 with my old Matrix SPDIF convertor, changing cables, all with the same result, I plugged in the Mac to the DI20 and could finally listen to music...
Any ideas on why the raspberry is not able to communicate to the DI20 (or the Matrix)?
Cheers

Can you print a copy of the system config file and post it? This may answer some questions for why the Volumio does not work.

 

[Articnoise]

Other fans of 3.993 out there?

I have been glued to my chair in the listening room every night since if i have flashed it. It's addictive. I am worried the memory foam i am sitting on will contract Alzheimer sooner than later. Etheral treble it has. So evident on this old Duke Ellington record i play two-three times a week.

For obvious reasons, we all need to evade these days. This hobby is quite the remedy until something better. Jazz musicians are the freest there are, so this is inspiring. They don't ask permission, they just are.

I prefer V3.933 over V3.99. 3.9333 is fuller, richer and more engaging, whereas the 3.99 has a bit too sharp treble.

 

[marcelnl]

Yes, as for power amps, what Kingwa calls linear fideality seems innovative to me . A design is a recipe, it the whole that matters. It has to have synergy between the design elements. This takes creativity and excellent focus on the target you are aiming at. So the beauty of a design is often in how you combine the elements. I am a sw designer myself.
With a non feedback amp, you have be clever to manage distorsion. The most important is to keep it very low in the upper range, where the human ear is most sensitive.
I think Kingwa has a huge preference for non feedback as an audiophile. My own experience is that they are the smoothest.

I'm with you on zero feedback sounding better, feedback usually messes up phase coherency over the bandwith and human hearing is great at one thing....estimating distance which is done by comparing time travel differences between both our ears.

 

[sajunky]

I'm with you on zero feedback sounding better, feedback usually messes up phase coherency over the bandwith and human hearing is great at one thing....estimating distance which is done by comparing time travel differences between both our ears.

It is more complicated. Phase coherency can be maintained by using high frequency devices. It still looks fine on the FFT measuring static sine wave (s), but response to the dynamic signal like music cannot be measured.

I have nothing agains a local feedback (within a single amplification device). Problem is with devices like opamps which have multiple amplification stages. A fedback signal arrives delayed against the input that cause some internal stages get saturated due to the fact that for a short time period there is no feedback at all. Normally overshot is seen on the output, but clever engineers have learned how to deal to reduce overshots. It doesn't change a fact that for a moment output do not follow the input. In result the sound is sterile, but unnatural and dark, there is nothing else we can hear around dominant notes.

 

[JaMo]

Hi,
@sajunky : -What firmware level do run in Your DI20 or DI20HE. You seem to have a lot to share so I wonder about Your findings. Myself, I have been trying out the newer versions (3.933, 4.075 and 4.076) and I am finding the 75 and 76 a bit too crispy and clear in my rig. The a bit softer and fuller sounding 3.993 is a winner here. I am runnig the DI20 HE fed by a Mutec Ref SE120 masterclock. Do You also use an external XO?
/Jan