Audio-gd NFB-1AMP Headphone Amplifier Review 

Of all the reviews you posted in 2017, this is my favorite : realistically priced gear that's well designed and well received by the majority of owners. Thanks for the vid Amos.

Great review as always. Love to see you do the NFB-28 and the NOS 11 . It would be great do best $500-$1000 price range desktop balsnced and unbalanced DAC/amp headphone shoot out . Amos are you attending RMAF this year ? Hope if you come like to meet you. Great blanced between opinion and tech data.

Hi Amos great review mate. I just ordered this amp last week. Stoked to see you review this amp. Im looking forward to using this with my ZMF Atticus when it gets here in a couple of weeks. cheers

great, hope to see more AGD reviews. IMO the bang for the buck is unmatched

I've got a Master 11 paired with HE-1000 v1. The M11 also has the latest firmware update. This firmware update transformed the M11 tremendously. Much more dynamic, particularly with the bass impact. Treble is still smooth too. Doesn't make the HE-1000 sound laid back at all. Great review Amos. Would love to see you review the new Singularity line up.

Very informative review. Great job. Do you think all the current schiit sources(dac) suffer from the same technical problem like you experienced with yggdrasil (shorting inputs)? That's one good reason for schiit users (I am one of them) to avoid this product. Also could you explain a bit more how to change the jumper to handle this issue?

Great review! I'd love to hear your thoughts on their NFB-28.38. Seems to be a comparable amp to this one, but also has a dac built in

Wishes I could understand, what you are talking about. but I feeel, this is a very interesting video.

What you are saying about the curve of the volume increment I think you actually meant an exponential increment rather than logarithmic if you check both graphs

First of all thanks for the review and the little balanced discourse. Maybe you can answer a question I have. Im fairly new to the balanced game so I was wondering if you could make any headphone balanced? Or does this only depend on the cable itself? And if so what makes the difference? Do you always need detachable cables? Or do you need a seperate left and right channel termination? And if not, does the headphone itself has to be designed to be balance cabled? Even if it was shipped with unbalanced cables? Because I was looking at a good entry level headphone/dac/amp system and until a few days ago I was thinking about the HE400S. Which seems to be unbalanced even though it has 2 seperate connectors. The 400i on the other hand seems to be manageable with balanced cables, and there are some available to order. Now since Ive seen some reviews of the new Monoprice M560 and M1060s. In the review of the M560 Zeos talks about how he made possibly the only balanced cable for them, because it uses a regular 3.5mm stereo connector as far as I can tell and it doesnt matter which side you plug in where, cause the headphone itself manages to choose the right channel since on the one side the tip is hot and on the other side the ring of the connector. Is there any chance I could use a "regular" balanced cable someone made with xlr/3.5mm connectors? Or what is so special about that solution Monoprice went with? And the M1060s use MMCX connectors and I found a cheap ($60) cable from Fidue which is a balanced 2.5mm to MMCX cable and I was wondering if I could use this possibly with an XLR to 2.5mm balanced connector as you have one, to make this headphone balanced. Or are there any other criteria I have to watch out for? (I wanted to use them of course with an balanced dac/amp combo. The entry level way to go would be of course the Schiit Jotunheim, which seems to be good value. However I was looking at the fairly new Aune S6. But I heard that it isnt a fully balanced dac (or amp? i forgot) and only uses a balanced output. What would you think of this? (regardless of being true or not) How would you estimate the change in quality by this? I chose it because its more fitting to my desk design than the silver Schiit (which is a bummer because everybody loves it). Soo...yeah. Do you possibly have other suggestions for a good balanced entry level dac/amp combo? If seen people also love the NFB11. Im confused and helpless.) I would really appreciate your help! Thanks anyway. Cheers

The volume increase you described isn't a logarithmic graph, that would be quite the opposite, it's an exponential one!

Hey Amos, have been enjoying your reviews immensely, keep it up! One question... If this is the cut down in size of the Master-9? What's the equivalent of the Master-7 and Master-11

Great video as always man! I just recently got a hd800 and I am loving it. What would be a more musical amp you would recommend over this nfb-1amp in the $500 range? It will be ran through my parasound zdac v2 which has been running my 800's so far with fairly good warm sound, just need better amplification. Thanks for great content!

great informational video, thank you

ive been looking to replace my darkvoice tube headamp with this one , will it be a huge step up or more a sideways move?

Great reviews. You've obviously been at this awhile. What's your recommendation if someone has both two-cable and single-cable headphones, which I'm sure are most people? Do we go balanced or unbalanced?

Thanks for the video! What DAC would you recommend to use with the 1 amp?

Hi ...how would u compare the preamp function of this model to their master 1 preamp. Is master 1 significantly a class above?

I'm curious what kind of cables do you use for these headphones at the end?

How does this compare to the Oppo HA1?

So, is this Audio-gd NFB-1AMP worthy with it's price, sir?

is the amp section of this the same as the one nfb 28.38? I assume it would be.

Is it possible to do a comparison of their DACs like Master 7, NFB7.77 and R2R 7?

thanks for the great review. what is that stand you have it placed on?

Hi, a question about your GD NFB1 AUDIO preamplifier. Could you tell me if it is possible to use the rca outputs simultaneously with the xlr outputs? The xlr outputs I would like to use to enter a power amp, while the rca outputs I would use them to enter a subwoofer filter. I await yours. Thanks so much.

hello! What is the best way to connect DAP to this amp? thanks!

You have a Curta!

My end game setup would probably be the Aries II balanced r2r dac run into the schiit Freya output 1 would be a NFB-1 amp as my solid state then through the nfb1 pre amp into a Tor audio tube amplifier and through output 2 would be my speaker amp with speakers 2 subs and super tweeters im kinda new into the speaker game but so far thats what im gonna work up to haha

Sir, where did you get that 2.5mm Balanced Xlr adapter?, i have been looking everywhere with no avail.

How does the nfb 15.32 compare?

Hi Currawong, did you have to clear customs or something like that in order to receive the amp?

One thing i dont understand about this amplifier the corresponding inputs and outputs L and R channel seems to be far apart?

Any comments on it as a balanced preamplifier driving standard xlr (not ACSS)?

How do you think it compares to the Schiit Jotunheim?

What's that big black tube amp called? I must know :)

Hey love youre reviews do you have any tips about what dac/amp that would sound great with my Audeze lcd-3?

AGD lists its output impedance as 10 ohms, how does that play with the Andromedas?

Could you kindly suggest which interconnects xlr cable I should use with NFB 1-AMP? My dac is on the warm side (TEAC UD-501) and I'd like to maintain the warm sound.

can you do a comparison between NFB-1 to M9?

Taking into account the sound only, is this amp better than the Jotunheim?

there is a low noise in the video

What about NFB 11.28

Hi whose is the Ether cable?

can I use iphone 5se as source to headphones or do I need a dac as well?

Your Microphone is making noise.

Just got this amp, noisy... At volume 50 i can hear noise in right channel, at 75-80 noise in both channels. Changing headphones, inputs, outputs, dacs cant solve this... :/ Heavy big box with so much things inside... and so noisy, wtf? 0_0

Strange for a guy with so much audio equipment having so much noise in his video lol

How is this preamp with power amp and speakers .. .?