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Audio-GD NFB-15.32 Delivery & Impression Thread - Page 17

post #241 of 939

Is there any difference or improvement of the new NFB-15 (2014) than the 15.32? I checked the Audio-GD website, and for the NFB-15, the url still has nfb 15.32 in it, so I would assume it's basically the same thing just updated?

post #242 of 939

The Audio-GD NFB-15 does not have the filter switches the 15.32 has.

I got the feeling 15.32 owners rarely used the filter switches, I know i do not use them.

post #243 of 939
Quote:
Originally Posted by PurpleAngel View Post
 

The Audio-GD NFB-15 does not have the filter switches the 15.32 has.

I got the feeling 15.32 owners rarely used the filter switches, I know i do not use them.

Ah, ok. So do you think the 15.32 sounds warm like the audio-gd website says the WM8741 chip is? I have just purchased the ODAC+O2 and I would like something else too with a little more bass and maybe just a tad more treble.

post #244 of 939
Quote:
Originally Posted by PurpleAngel View Post
 

The Audio-GD NFB-15 does not have the filter switches the 15.32 has.

I got the feeling 15.32 owners rarely used the filter switches, I know i do not use them.

 

Actually the -15 had the switches from it's release.  It was the -12 and 12.1 that didn't (they were precursor to the 15).  Difference between the 15.1 and 15.32 is simply in the USB output stage.

 

 

Quote:
Originally Posted by achelgeson View Post
 

Ah, ok. So do you think the 15.32 sounds warm like the audio-gd website says the WM8741 chip is? I have just purchased the ODAC+O2 and I would like something else too with a little more bass and maybe just a tad more treble.

 

I have the 12.1 (older brother of the 15 series).  I think Audio-gd described the 12.1 pretty well:

"Neutral but smoothness sounding ,it doesn't sound skeletal or digital (or metallic). There's meat aplenty on them bones . It's a sigma-delta DAC chip implementation without the dryness, neutrality without the emotional disconnection"

 

My take on it is that it is actually pretty neutral - but has more body to the sound.  I don't see it as overly bass tilted.  Purple can give you a good idea on what he thinks because he owns the 15.  I'd bet they sound pretty much the same as the 12 though - and it's definitely not dry or thin.  I love my 12!

post #245 of 939
Quote:
Originally Posted by Brooko View Post
 

Actually the -15 had the switches from it's release.  It was the -12 and 12.1 that didn't (they were precursor to the 15).  Difference between the 15.1 and 15.32 is simply in the USB output stage.

 

I was referring to the OS/Filter switches on the front panel, my NFB-15.32 has them, the Audio-GD website shows the new NFB-15 no longer has the front panel OS/filter switches.

I was not trying to refer to the internal digital filters

post #246 of 939
Quote:
Originally Posted by PurpleAngel View Post
 

 

I was referring to the OS/Filter switches on the front panel, my NFB-15.32 has them, the Audio-GD website shows the new NFB-15 no longer has the front panel OS/filter switches.

I was not trying to refer to the internal digital filters

 

Gotcha - I hadn't noticed they took the switches off the front panel with the 2014 version (wonder why?).  I see they still have the internal jumpers though. Thanks Purple - I wouldn't have picked it up.

 

How would you describe the sound of your 15.32 compared to anything else you owned?  My 12.1 might have a hint of warmth - but I've never thought of it as overly warm .....  

post #247 of 939
Quote:
Originally Posted by Brooko View Post
 

 

Gotcha - I hadn't noticed they took the switches off the front panel with the 2014 version (wonder why?).  I see they still have the internal jumpers though. Thanks Purple - I wouldn't have picked it up.

 

How would you describe the sound of your 15.32 compared to anything else you owned?  My 12.1 might have a hint of warmth - but I've never thought of it as overly warm .....  

 

Audio-GD uses the same picture for the front panel of the new NFB-11 and NFB-15, I'm assuming because the front panels are exactly the same.

My NFB-15.32 is the only DAC/amp I use, it replaced my Essence STX (AD797BR).

It was only this last Tuesday that was finally able to get the 15.32's USB to work.

Months back I had tried updating the firmware, I might have done something wrong in the setting, but now the USB works :)

In general I like that I bought it, It has a "black" background, where as my STX would seem to pick up a little "electrical noise" in the background from the computer.

Music does sound good, guess i do feel the "warmth" from the 15.32.

post #248 of 939

I would need to do an A to B test with another source to really quantify the warmth of my 15.32, but I do very much like the sound of this amp. My DT880s don't sound quite as cold and clinical as I was expecting them to, that might be thanks to this amp.

post #249 of 939
Quote:
Originally Posted by PurpleAngel View Post
 

The Audio-GD NFB-15 does not have the filter switches the 15.32 has.

I got the feeling 15.32 owners rarely used the filter switches, I know i do not use them.

I used to use them alot when I had a DT880 premium 600 and the top 3 I used i could tell the difference between them, And used  8:2 when I had a A900X, and 4:2 when I had the DT880 premium 600's. But when I move to the Beyerdynamic T90 I used 4:3 until I got a little dot MKII and then they all was slightly different then each other so I kept it on 8:2 which where I notice it slightly in my favor. Could been a placebo effect on the switches or it could be long usage which caused it to become slightly noticeable but it strange that it depended on the headphones I was using and even after having a tube amp. But it depended on what type of music I was listening to, to notice the difference any way.

 

 

Quote:
Originally Posted by Brooko View Post
 

 

Actually the -15 had the switches from it's release.  It was the -12 and 12.1 that didn't (they were precursor to the 15).  Difference between the 15.1 and 15.32 is simply in the USB output stage.

 

 

 

I have the 12.1 (older brother of the 15 series).  I think Audio-gd described the 12.1 pretty well:

"Neutral but smoothness sounding ,it doesn't sound skeletal or digital (or metallic). There's meat aplenty on them bones . It's a sigma-delta DAC chip implementation without the dryness, neutrality without the emotional disconnection"

 

My take on it is that it is actually pretty neutral - but has more body to the sound.  I don't see it as overly bass tilted.  Purple can give you a good idea on what he thinks because he owns the 15.  I'd bet they sound pretty much the same as the 12 though - and it's definitely not dry or thin.  I love my 12!


Actually the 12.1 had the switches on the front because I remember looking at the 12.1 but couldn't afford it at the time and ending up with a NFB12.0 that had the dip switches inside that I got cheap from another user.


Edited by genclaymore - 5/30/14 at 10:19am
post #250 of 939

Got my 15.32 Friday.  Though I'm a bit skeptical still about burn-in I'm still trying to reserve final judgment until it has a couple of weeks of solid use.  So far I have mixed feelings comparing it to the sound my grados have plugging into my bose computer speakers.  Mids and highs are noticeably clearer and crisper.  The sound is more open and less muddled.  But bass is pretty lacking in comparison.  I boosted the bass up in the Foobar EQ a little and it helped but still doesn't have the impact and fullness that I have with the Boses.

post #251 of 939

 

 

Here's a picture of what mine looks like - no buttons on the front for filter settings and some small ventilation holes in the top and bottom. 

post #252 of 939
Quote:
Originally Posted by Wheezy View Post
 

 

 

Here's a picture of what mine looks like - no buttons on the front for filter settings and some small ventilation holes in the top and bottom. 

Ah, ok, that looks exactly like the NFB-15 on the audio-gd website. I'm assuming it would be pretty much the same sound too.

post #253 of 939
Quote:
Originally Posted by Wheezy View Post
 

Got my 15.32 Friday.  Though I'm a bit skeptical still about burn-in I'm still trying to reserve final judgment until it has a couple of weeks of solid use.  So far I have mixed feelings comparing it to the sound my Grados have plugging into my bose computer speakers.  Mids and highs are noticeably clearer and crisper.  The sound is more open and less muddled.  But bass is pretty lacking in comparison.  I boosted the bass up in the Foobar EQ a little and it helped but still doesn't have the impact and fullness that I have with the Boses.

 

Have you plugged your Bose computer speakers into the NFB-15.32's line-output (RCA) jacks?

Should make the Bose speakers sound nice (better).

 

There is a possibility the Bose computer speakers headphone output has a high impedance, which might have caused your 32-Ohm Grados to have a bloated (louder, less detailed) bass.

post #254 of 939
Quote:
Originally Posted by PurpleAngel View Post
 

 

Have you plugged your Bose computer speakers into the NFB-15.32's line-output (RCA) jacks?

Should make the Bose speakers sound nice (better).

 

There is a possibility the Bose computer speakers headphone output has a high impedance, which might have caused your 32-Ohm Grados to have a bloated (louder, less detailed) bass.

I haven't tried powering the speakers by the amp, I'll see how it sounds.  Bose doesn't publish exact specs so I don't know what impedance it has.

 

I listened to test tones this morning with my grados plugged into the audio-gd.  200 hz and below was very quiet, I don't think I could hear anything at 100 or below.  With Grados plugged into the Boses 200 Hz sounded about the same volume as 1k.  When I get a chance I'm going to bring the Audio-GD into my work and measure the output plotted vs frequency.

post #255 of 939
Quote:
Originally Posted by Wheezy View Post
 

I haven't tried powering the speakers by the amp, I'll see how it sounds.  Bose doesn't publish exact specs so I don't know what impedance it has.

 

I listened to test tones this morning with my Grados plugged into the audio-gd.  200 hz and below was very quiet, I don't think I could hear anything at 100 or below.  With Grados plugged into the Boses 200 Hz sounded about the same volume as 1k.  When I get a chance I'm going to bring the Audio-GD into my work and measure the output plotted vs frequency.

 

I'm assuming your using self-powered Bose speakers, so connecting the NFB-15.32's line-output (RCAs) jacks to the line-input jacks on the Bose should easily work, "impedance" should not be an issue, as this is different from a headphone jack connection.

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