Audio-GD NFB-11.32 & NFB-11 (2014) (Delivery & Impression Thread)!!!
Nov 30, 2017 at 8:54 AM Post #2,855 of 3,093
Just recieved the R2R 11. Anyone know which drivers to download for these, or am I supposed to use the same ones for the 11.28?
It is the same driver for the 11.28. Both have the Amanero USB module.
If you have both R2R and 11.28, You cannot use both at the same time with ASIO. You can try using both with WDM, though. It worked partially for me. I had some issues. It is better to keep only one connected or powered on.
 
Nov 30, 2017 at 9:02 AM Post #2,856 of 3,093
Hmmm. Strange. Like the NFB 11.28 I feel its highest volume is quite low, considering the amplifier that its built with (this is with high gain enabled). Especially compared to other Dac/Amps with that are have less powerful specs. I also have a direct connection from the amp to the Bowers & Wilkins MM-1 (which for some reason works when I have the buttons on "USB" on the right one and "Variable" on the left one) speakers, and not only do they not get very loud. But they also sound very muddy and distorted, compared to the speakers' own DAC/Amp.
 
Nov 30, 2017 at 9:19 AM Post #2,858 of 3,093
Here's a video demonstrating what I mean:

https://streamable.com/k8rex

Not only is peak volume not loud enough, but it also reveals a lot of distortion pretty quickly. Dafuq?
What kind of phone do you have? If you have an android it should be plug and play with an adapter. Try to eliminate the computer as your source. If it still does it then you can look at it being the dac amp
 
Nov 30, 2017 at 9:28 AM Post #2,859 of 3,093
I don't have my Android phone connected to anything...My NFB is connected via USB to the PC (for Headphones), and RCA-Aux to the speakers. I swwitch between Variable/HP to switch between headphones and speakers.
 
Nov 30, 2017 at 9:30 AM Post #2,860 of 3,093
I don't have my Android phone connected to anything...My NFB is connected via USB to the PC (for Headphones), and RCA-Aux to the speakers. I swwitch between Variable/HP to switch between headphones and speakers.

I understand you're using the pc. I want to eliminate the pc. Many many settings in the pc. If it works on your phone then you know it's the pc, but if not and you have the same issue with your phone you know it's the dac amp.
 
Nov 30, 2017 at 10:48 AM Post #2,861 of 3,093
If you're using the R2R 11 or the NFB 11 as a dac output ( stand alone ) and the volume has an effect on line out you can open the top cover and change the pinout to have ' Line Out ' stable volume. Low gain is 1v and high 2.5v I believe.

Changing the pin changes the output to 'Variable' only, effectively disabling the "Fixed' setting. As far as I know. The gain setting continues to have an effect on the output. High is 2.5V.

NFB1110.jpg
 
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Dec 1, 2017 at 10:55 PM Post #2,862 of 3,093
Here's a video demonstrating what I mean:

https://streamable.com/k8rex

Not only is peak volume not loud enough, but it also reveals a lot of distortion pretty quickly. Dafuq?
From what I see in your video, you have the DAC output set on variable with high gain and the volume control is nearly to the maximum.
May be the output is too loud and distorted due to overloading the speakers input. You should set all Windows volume to the maximum and the speaker volume initially to the middle. Turn the NFB volume to the minimum with low gain. Play some music and start turning the DAC volume up. If it is not too loud at 2 o'clock, turn the volume knob down and change the gain to high and start turning the volume up again. If it is not too loud at 2 o'clock, increase the speakers volume. It is better to control the volume with the DAC knob instead of using the Windows or the application volume control. If you want to use the speakers volume control instead, set the DAC's output to fixed and try both low and high gain for the best sound.
The B&W MM-1 has a DSP, so it will convert the analog signal from the analog input to digital for processing, so the quality of the sound will be limited by its ADC and DAC. You should get a better result using its internal DAC (USB). Even so, it is advisable to keep the Windows and the application volume control at the maximum. For both the NFB and the MM-1 audio device settings in Windows, set the format to 44.1 kHz and the maximum bit depth available for each device.
 
Dec 2, 2017 at 2:47 AM Post #2,863 of 3,093
Agree with Elder. If your B&W speakers do turn analog input back to digital, you will get best sound connecting them directly to your computer via USB.
 
Dec 7, 2017 at 7:38 AM Post #2,865 of 3,093
This one: https://www.ip-sa.com.pl/audio-p-1305.html is the old version, right?
The NFB-11.28 is basically the new 2017-version of it.

Other than better USB drivers, is there a fundamental difference, that warrants the price difference?
The NFB-11.28 uses the new Sabre ES9028 Pro DAC chip. The USB input is Amanero that is better than the one used in the 2015 version. The Amanero module is quite expensive.

More information in the following links:

http://audio-gd.com/Pro/Headphoneamp/NFN1128/NFB1128EN.htm

http://www.esstech.com/index.php/en...ers/audiophile-dacs/sabre-pro-dacs/es9028pro/

https://www.amanero.com/index.htm
 

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