USB audio adapters (snd_uaudio): what to buy and what not?
Yuriy Tsibizov
Yuriy.Tsibizov at gfk.ru
Mon May 15 06:10:43 UTC 2006
> I'm going to buy an USB audio adapter supported by
> FreeBSD's snd_uaudio
> driver. My needs are general: to play/record stereo audio (no need in
> additional channels), line output is a must, headphone output
> is a plus ;)
> What models can you recommend to buy and what - to avoid
> buying? snd_uaudio(4)
> only talks about "USB audio class devices" and doesn't
> mention specific
> models. I would like to hear about any (positive or negative)
> experience
> with these devices under CURRENT and/or RELENG_6 systems.
I have
http://www.defender.ru/products/elektronnye-ustroistva/adaptery-usb/10100/
(http://www.usbgear.com/usb-audio-adapter-5/index.html for English description)
that is made by unknown company and sold under several brands (just search for
"USB 5.1 AUDIO ADAPTER" or "AC1500 USB" in Google).
Positive side:
It works (stereo playback/recording only, 5.1 sound does not).
Cheap (around $17 in Moscow).
Has LEDs that blink when data is sent over USB bus.
Negative side:
You have to find correct recording volume, otherwise all you will get
is a cheap guitar overdrive - it seems that 100% rec gain is realy 200-400% gain over
source level. If I set a mixer (Behringer MX) to -10db (level required by most
consumer equipment) and line volume at 100% I'm getting
distorted sound under any OS (both 7-CURRENT at home and XP at work).
I will not recommend it to anything serious.
Yuriy
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