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Audio-GD NFB-12 - Page 134

post #1996 of 2247

That's what I like about Audio-GD. They have good products and are small enough that you can

get that one on one raport with them when you need help.

 

 

Quote:
Originally Posted by KimLaroux View Post

Well I hadn't thought of that. Asking technical information from a manufacturer and expecting an answer seems like an alien idea. 

 

But it worked! I received an answer, telling me which resistors to change, to what value, and what the result will be.

 

There's 8 2202 surface mount resistors in a line of 16 resistors between the dual DACs and the dual relays. 2202 is 22k 1%. Changing these with 47k resistors will lower the gain by 7dB.

 

Here's the line of resistors in question.

 

Resistors setting up the gain on the Audio-gd NFB-12.

 

The other 8 resistors are 5.6k. They alternate, so there's 22k, 5k6, 22k, 5k6... etc. I'm guessing the 5k6 are for the high gain and the 22k for the low gain. Edit : Just received an email confirming the 5k6 are for the high gain.

 

So now all I need are 8 47k resistors in 1206 package. Changing these will be quite a challenge. biggrin.gif

post #1997 of 2247

Lowering the volume gives me problems with channel inbalance as well.

 

Anyway, tis a good device. O2 works better with AKG 701's and the Shure's while the NFB excells withe everything else I have.

post #1998 of 2247
Quote:
Originally Posted by bowei006 View Post

Lowering the volume gives me problems with channel inbalance as well.

 

Anyway, tis a good device. O2 works better with AKG 701's and the Shure's while the NFB excells withe everything else I have.

 

hahaha, those are the exact headphones I have! redface.gif

 

But yeah, there's no point getting another amplifier at this point. I'm planning on just saving and go fully balanced on my next DAC purchase.

 

Still, anyone started a thread for the NFB-15?

post #1999 of 2247
Quote:
Originally Posted by KimLaroux View Post

 

hahaha, those are the exact headphones I have! redface.gif

 

But yeah, there's no point getting another amplifier at this point. I'm planning on just saving and go fully balanced on my next DAC purchase.

 

Still, anyone started a thread for the NFB-15?

Haha yeah. I got the O2 only to test and learn off of it. I would not spend $150+ to have it "match" a tiny bit better sonically with those two headphones.

 

What are you looking at for your future one?

post #2000 of 2247
Quote:
Originally Posted by bowei006 View Post

Haha yeah. I got the O2 only to test and learn off of it. I would not spend $150+ to have it "match" a tiny bit better sonically with those two headphones.

 

What are you looking at for your future one?

 

My thoughts exactly. I can already feel the gentle slope of diminishing returns...

 

I just want more DIY stuff. Like recabling my headphones for balanced operation, building a 4 channel amplifier... But all this will take time and money, things I don't really have being a student. Either way, I'm not really interested in simply buying new products for the sake of "upgrading". I find it more fun and satisfying to build things up myself.

 

Though I still haven't found a balanced DIY DAC, so I might have to buy one at some point. I'm thinking about and Audio-GD NFB-10 or NFB-17, Yulong D100 or D18... something like that. But by the time I'll be able to buy one, those will probably be retired products. rolleyes.gif

post #2001 of 2247

Haha, I am not too crazy for buying all that gear as well :(

post #2002 of 2247

Well I'm back with an update.

 

I've had the NFB-12 for about 6 weeks now. And have been using it with my modded

Beyerdynamic T1's. I ended up selling the HD-650's because once I heard the T1's

with the NFB-12 I had to get them. Awesome sound!

 

I'm using my computer feeding the NFB-12 via USB. Even though I did have to get

another USB cable since the one that came with it wasn't very good. I had drop outs

and even lost connection at times.

 

With the T1's I found the 2x oversampling Linear phase softknee filter works best. Has

a nice roll off in the treble that is really nice. And I find the soundstage is awesome with

these headphones. I also don't find it boomy like I did with the HD-650's. The bass is just

right, deep and controlled. I have not had to EQ at all with the T1's.

 

Here is a picture of it for you guys that like pictures darthsmile.gif

 

 

T1 and HD-545 with NFB-12.jpg

post #2003 of 2247

I was told they made the nfb-15 more neutral as opposed to the nfb-12 being a bit warm.

 

On another note, have you guys ever received an nfb-12 that was wobbly and had a number of scratches on it(one of them being deeper than the others)?

post #2004 of 2247
Quote:
Originally Posted by Syrk View Post

I was told they made the nfb-15 more neutral as opposed to the nfb-12 being a bit warm.

 

On another note, have you guys ever received an nfb-12 that was wobbly and had a number of scratches on it(one of them being deeper than the others)?

Umm...no??.....

 

I have the O2 and the NFB is noticeably more "warm" and compact in terms of soundstage but the NFB has more "oomph" to my music.

post #2005 of 2247
Quote:
Originally Posted by bowei006 View Post

Umm...no??.....

 

I have the O2 and the NFB is noticeably more "warm" and compact in terms of soundstage but the NFB has more "oomph" to my music.

I don't understand what you're saying no to. Kingwa himself said, "The NFB15.1 sound is neutral than the NFB12.1, the NFB12.1 is slight warmer."

post #2006 of 2247
Quote:
Originally Posted by Syrk View Post

I don't understand what you're saying no to. Kingwa himself said, "The NFB15.1 sound is neutral than the NFB12.1, the NFB12.1 is slight warmer."

I'm saying no to the scratches and dents, I was agreeing partially with the warmenss comment except I was comparing it to my O2.

post #2007 of 2247

.


Edited by Syrk - 6/24/12 at 6:49pm
post #2008 of 2247

Could it have been the shipping?....

post #2009 of 2247

.


Edited by Syrk - 6/24/12 at 6:49pm
post #2010 of 2247

If he said it was perfect and mint and it wasn't and there was no problems with the packaging...then yes, he owes you a refund. IF it was due to shipping(hard to tell) then probably not.

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