[Nitrius]

So am looking at these two dac/amp for my Sennheiser HD700, and am wondering if anyone have any experience with them? NFB-11 looks to be the more expensive one, and i guess that is because of the Sabre dac? Beside that they look very much similar.

Another thing i wonder about is how hot these dac/amp get over time? As am looking for something to replace my soundcard in my computer so it's gonna get used a lot.

One thing i am a bit afraid of is hum/hiss noises, i've tried some dac/amps in the past and everyone of them have had a hiss/hum noise, you don't really hear it much when playing music, but it get's annoying since it's there all the time. And this is a problem i've never had with my soundcard, and is the reason i haven't switched, but am looking at trying again now.

 

[PurpleAngel]

So am looking at these two dac/amp for my Sennheiser HD700, and am wondering if anyone have any experience with them? NFB-11 looks to be the more expensive one, and i guess that is because of the Sabre dac? Beside that they look very much similar.

Another thing i wonder about is how hot these dac/amp get over time? As am looking for something to replace my sound card in my computer so it's gonna get used a lot.

One thing i am a bit afraid of is hum/hiss noises, I've tried some dac/amps in the past and everyone of them have had a hiss/hum noise, you don't really hear it much when playing music, but it get's annoying since it's there all the time. And this is a problem I've never had with my sound card, and is the reason i haven't switched, but am looking at trying again now.

 
I own the NFB-15.32, but now I wish I had spent extra for the NFB-11.
I think I would have been happier with the NFB-11's better detail.
 
My NFB-15.32 has a very quite background, as the computer is outputting a digital audio signal to the NFB, which is outside of the computer case.
So the NFB (15.32,15,11) is not effected by the electrical noise inside the computer case.

 

[Nitrius]

Does the unit get hot over time? If yes, i guess it's designed for it, and i won't do any harm to let it be powered on for longer period of time? Also, my soundcard is the Creative ZXR, would the NFB-11 or 15 be an upgrade?

Don't really have any big problems with the soundcard, am just wondering if there is more to get out of my HD700.

 

[PurpleAngel]

Does the unit get hot over time? If yes, i guess it's designed for it, and i won't do any harm to let it be powered on for longer period of time? Also, my sound card is the Creative ZXR, would the NFB-11 or 15 be an upgrade?

Don't really have any big problems with the sound card, am just wondering if there is more to get out of my HD700.

 
The NFB-11/15 does get warm, but so far that has not caused any problems. 
 
I was using an Asus Xonar Essence STX sound card (AD797BR op-amps), before I ordered the NFB-15.32.
For me the NFB-15.32 offered several minor improvement, like a volume knob at my finger tips, really low output impedance for my low Ohm headphones.
I longer hear any interference in the audio background.
So far I have no regrets buying the NFB-15.32