Audio-GD NFB-11

Discussion in 'Headphone Amplifiers and Combo (DAC/Amp) Units' started by PacoTaco, Apr 25, 2016.

  1. ufospls2

    ufospls2 Friend

    Pyrate
    Joined:
    Jan 10, 2017
    Likes Received:
    2,011
    Trophy Points:
    93
    Location:
    Canada
    This is really interesting. I thought you thought that AGD amp's were good (ish at least?)

    As far as I know the NFB-1AMP is based off of the Master 9. I've had the Master 9 in since Monday, and think its pretty good. Definitely better than my Auralic Taurus mk2 was, and very different from the Headtrip. I'm not hearing it as veiled or dull at least, but your ears are much more experienced than mine. If I had to pick a veiled, dull and warm amp that I have heard it would be the Mjolnir 2 that I heard (stock tubes)...which makes me wonder if I'm f'ing deaf as you would prefer the even Magni 2U over the NFB-1. What would you describe as a Neutral, non dull or veiled amp as a point of reference? Man, the nervosa is kicking in, I should probably just go enjoy some tunes.
     
  2. capetownwatches

    capetownwatches New

    Joined:
    Jun 20, 2017
    Likes Received:
    17
    Trophy Points:
    13
    Location:
    Cape Town, SA
    Perhaps I'm more f'ing deaf than I first thought in that case. Dull? Veiled? Porridge? Not to these battle scarred aural appendages. Not even remotely.
     
    Last edited: Sep 16, 2017
  3. purr1n

    purr1n Desire for betterer is endless.

    Staff Member Pyrate BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    90,157
    Trophy Points:
    113
    Location:
    Padre Island CC TX
    NFB-1 might be a Master 9 circuit, but with much less gain (more feedback) for headphone use. More feedback typically results in what I've described: pervasive dullness Similar reason why Vidar is more open and less flat than Jotunheim (I believe these two use similar topology). Might also be other things like cheaper power supply. Just because NFB-1 uses same circuit as Master 9 doesn't mean it will sound the same. The Singularity 19 uses the approach as the Master 7 DAC, but one is the shittiest DAC I've ever heard and the other was my main DAC for a while.

    Yes. Magni 2U is better than NFB-1. At least for the Senns, Atticus, HP-3. NFB-1 might close the gap with planars since most planars are kind of compressed and bury fine details within the abyss of the tensioned diaphragms. I just flat out immensely dislike the NFB-1. I'd rather use a Fulla 2 (with extra power USB plugged in.)

    Mjolnir 2 is too warm and thick for my tastes with the darker or bassier headphones, so in that sense could be dull. When I say dull, I mean flat, compressed, no dynamics. However microdynamics are quite good and macrodynamics amazing on the Mjolnir 2.

    BTW. I'm running Theta Data III transport into coax into tweaked Gungnir Multibit for all above impressions. Source matters more than most people think. All comparisons are direct, using same recordings / masters. NFB-1 was also set to high gain.

    Finally, it could come down to preference. One man's shit is another man's treasure.
     
    Last edited: Sep 16, 2017
  4. Peter78

    Peter78 New

    Joined:
    Jan 20, 2016
    Likes Received:
    18
    Trophy Points:
    8
    Regarding gain:

    Master 9
    Low Gain : +14 dB
    High Gain : +20 dB

    NFB-1AMP
    Gain: +16 dB
    (I don't believe that there really is a "high" or "low" gain mode; the "Gain" button just changes the curve used for attenuator relay values)
    [​IMG]
     
  5. purr1n

    purr1n Desire for betterer is endless.

    Staff Member Pyrate BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    90,157
    Trophy Points:
    113
    Location:
    Padre Island CC TX
    Can you post Master 9 and NFB-1 internals?
    Just curious what the differences might be between these two that use the same circuit.
     
  6. purr1n

    purr1n Desire for betterer is endless.

    Staff Member Pyrate BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    90,157
    Trophy Points:
    113
    Location:
    Padre Island CC TX
    A huge part of the disconnects come down to these factors:
    1. Use of known recordings down to specific masters. With a lot of compressed modern recordings, gear really does not matter. Garbage in, garbage out.
    2. Sources / DACs used. Garbage in, garbage out.
    3. Headphones used. Low and mid-fi planars just require dumb power. They don't resolve enough to take advantage of higher quality gear.
    4. Direct comparisons of gear using same recordings, same source, same set of headphones, same sitting.
    5. Experience with a wide variety of systems from $99 to $25000+++
    6. Willingness to accept the possibility that $150 gear can sound better than $500 gear or even $1000.
     
  7. Ray

    Ray Friend

    Pyrate
    Joined:
    Oct 27, 2015
    Likes Received:
    1,302
    Trophy Points:
    93
    Location:
    On the range
    IMG_7090.JPG IMG_7089.JPG
     
  8. ColossalKiwi

    ColossalKiwi New

    Joined:
    Feb 21, 2017
    Likes Received:
    0
    Trophy Points:
    3
    Location:
    New Zealand
    Can we expect community NFB-1amp measurements at any point? I'd be particularly interested in THD figures, seeing as the official listed specs have been believed to be inaccurate on some other Audio-GD products, if I recall correctly.
     
  9. SSL

    SSL Friend

    Pyrate
    Joined:
    Nov 12, 2015
    Likes Received:
    1,241
    Trophy Points:
    93
    In other words, there's no point in most people bothering with dedicated audio gear.
     
  10. purr1n

    purr1n Desire for betterer is endless.

    Staff Member Pyrate BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    90,157
    Trophy Points:
    113
    Location:
    Padre Island CC TX
    Probably not in a while. @brencho has it now. He'll post impressions when he gets to it. It's going on a loaner tour.
     
    Last edited: Sep 16, 2017
  11. bazelio

    bazelio Friend

    Pyrate
    Joined:
    Nov 16, 2015
    Likes Received:
    3,417
    Trophy Points:
    113
    I used an NFB-1 Amp for about a month. It's been a few years now, but it's still memorable due to the fact that I can't recall hearing an all-around shittier amp since then. Smeared, flat, compressed, veiled and defective are words that come to mind. It just did several things very poorly, and you couldn't walk across the carpet in socks and touch it, or the volume would go haywire. Kingwa said that was user error. LOL.
     
  12. Peter78

    Peter78 New

    Joined:
    Jan 20, 2016
    Likes Received:
    18
    Trophy Points:
    8
    Man, you guys are killing me. Now I really want to try something else with my headphones. A quick question, though, Bazelio. You're definitely referring to the NFB-1AMP? I didn't think that was even available a "few years ago." For some reason I'm thinking that it's been out for less than 2 years; I could be wrong though.

    As a test, last night, I removed the NFB1-AMP as a preamp for my active monitors and hooked back up my passive attenuator (Emotiva Control Freak, nothing fancy). It could be my mind playing tricks on me, but it did seem livelier without the AGD amp, so maybe you guys are onto something.

    I'll be a bit disappointed, if this amp turns out to be crappier than I thought, since the specs. look great, and it did receive a fair amount of praise (even on this forum, not just the other one, where everything gets praised), but I'll bite the bullet and try something else. I'm interested to see the results of the loaner tour here. In the meantime, I've been checking out some other amps (Schiit, among others).
     
  13. GoodEnoughGear

    GoodEnoughGear Evil Dr. Shultz‎

    Pyrate
    Joined:
    Oct 25, 2015
    Likes Received:
    3,073
    Trophy Points:
    113
    Location:
    Cape Town, South Africa
    I suspect based on availability of gear that regional 'tastes' develop. South Africa doesn't have a great selection and it's relatively much more costly to buy gear. Europe also seems to have its differences. That doesn't in any way disqualify the opinions of those who have access to lots of gear like Marv, but goes some way to explaining why opinions can clash.
     
  14. AMW1011

    AMW1011 Friend

    Pyrate
    Joined:
    Dec 3, 2015
    Likes Received:
    322
    Trophy Points:
    63
    Location:
    Pennsylvania
    Home Page:
    Go listen to other stuff and make up your own mind. Don't read shit of forums and have it change your perception. That's how shitty little circlejerks and echo chambers happen and shit like Ultrasone still has fans. Marv himself said it:

     
  15. bazelio

    bazelio Friend

    Pyrate
    Joined:
    Nov 16, 2015
    Likes Received:
    3,417
    Trophy Points:
    113
    Ok I got the timeframe wrong. Here's my old for sale ad.

    https://www.head-fi.org/threads/agd-nfb-1amp-like-new-3-weeks-old.791583/

    I remember I'd placed an order for the ZDS and got the NFB-1 while I was waiting. I was curious to see if it was something I could use at work, and if it even partially lived up to the hype. It didn't. Looks like I took a bit of a haircut on that thing. Oh well.

    We used to say around here that some things just aren't a matter of "preference"; some things just flat out suck. NFB-1 falls in to that category. Or at least mine did.
     
    Last edited: Sep 17, 2017
  16. purr1n

    purr1n Desire for betterer is endless.

    Staff Member Pyrate BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    90,157
    Trophy Points:
    113
    Location:
    Padre Island CC TX
    How many times has Kingwa warned us NOT to use Force Lighting powers when around his amps? Geez. This is user error on your part.
     
  17. Ray

    Ray Friend

    Pyrate
    Joined:
    Oct 27, 2015
    Likes Received:
    1,302
    Trophy Points:
    93
    Location:
    On the range
    My unit was a turd as well
     
  18. purr1n

    purr1n Desire for betterer is endless.

    Staff Member Pyrate BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    90,157
    Trophy Points:
    113
    Location:
    Padre Island CC TX
    On the other hand, it might be best dumping it ASAP before the value turns to shit now that it's on SBAF's radar and heading out on the loaner program. I cite this as an example: https://www.head-fi.org/threads/fs-audio-gd-singularity-19-dac.855837/

    @brencho's been lowering the price for two months and we still can't get rid it.
     
  19. Peter78

    Peter78 New

    Joined:
    Jan 20, 2016
    Likes Received:
    18
    Trophy Points:
    8
    Well put, and that is what I intend to (augmenting that with the data provided by others). I wasn't implying that I trust someone else's perceptions over my own, and we do have our own individual tastes, after all. However, my perceptions are based on my own experiences and what I've tried so far (which isn't very much, in the way of better amps), so I'm attempting to become more informed with the information available. Of course, ultimately I'll have to decide for myself, but I'll use the experience and impressions of others, as well, especially since I probably won't have the opportunity (or time) to audition all of the gear that the folks here do.

    Wait, Ultrasone still has fans?
     
  20. philipmorgan

    philipmorgan Member of the month

    Pyrate BWC
    Joined:
    Sep 28, 2015
    Likes Received:
    3,791
    Trophy Points:
    93
    Location:
    In the wind, so to speak
    Home Page:
    He's going to have to throw in a free massage and burritos for a week to move that thing

    [​IMG]
     

Share This Page