What about using microphone input from a headphone for recording and using
the headset for playback? Does it need any extra circuitry?

On Tue, Feb 24, 2015 at 8:22 PM, Fredrik Olofsson <[email protected]> wrote:

> all the usb soundcards i've tried so far can don't need biasing.  just
> solder an electret mic directly to a minijack and connect it to the input
> of the usb soundcard.  though note that sound quality varies.  some cards
> make a lot of noise (one logilink model even was blinking a led when active
> and that interfered and could be heard in the mic input signal.)
> terratec aureon dual usb is the best sounding card i've found so far.
>  though i don't own an audio cape so i can't compare.
>
> If i use usb audio interface instead of the cape, is there a need for
> biasing ?
>
>>
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