glenda
Whoops, I was banned before.
- Joined
- Sep 19, 2011
- Posts
- 91
- Likes
- 13
Quote:
My NFB-12 was of the old stock (the first batch.)
It has no filter selection so only default brick wall filter.
But I always wondered about the "dimness" all man keep mentioning about, because I felt nothing of the sort.
Indeed, NFB-12 has a roll off beginning from 8kHz to 20kHz, due to the filter setting.
But it's only 6dB even at the lowest point.
Can you imagining how small that is?
I got a recording interface recently (RME Babyface, very good recording equipment if you know it.)
Added with a condenser microphone, I was able to to some headphone FR test.
Here's two example:
Beyerdynamic T1 with Babyface's Headphone out:
Here's with NFB-12:
I can't really see any difference in the high FR difference that was resulting from the small 6dB roll off of the filter setting.....
So it really is not a big issue with me.
BUT,
the USB input is very problematic!!
I don't know what Audio-GD had done wrong, but their TE7022 receiver part is not setup correctly!
What ever computer I used and what ever systems, software I've tried, the thing would no get correct 24/96 kHz sample data
It would ACCEPT such input from USB, but somehow distort or resample it so only below 44kHz in really into the DAC.
So it got terrible distortion with high res data, (16bits/44kHz is all right)
It's fine when I switched to optical feeding from the babyface, no fake resample at all.
So the USB receiver is not really working with 24bits/96kHz high res but only working properly with 44kHz data.
The computer I tried including PC, notebook, MAC. Software with ASIO4ALL under windows XP, WASPI under Windows 7.
All to the same result.
THAT's not proper.......
They should fix it really......
Best headphone amp post I've seen in months, blows away all the meanlingless meter readings over at that blog about oxygen. Really puts things in perspective. Thanks.
Also read a few pages back, you should can be upsamplin with sox using that 2x filter, then the 6db dip gets pushed into the ultrasonic region.