You sould not need the software. you hsould b e able to go to input  and be 
able to adjust levels there.

Good luck.
On Apr 30, 2010, at 10:45 AM, Annie Skov Nielsen wrote:

> Hi Chris.
> 
> thank you very much.
> 
> In fact I have a really good USB mic, but the software for the mac is
> not accessible at all, and therefore I can not adjust the recording
> level. It is the 900usb stereo mic from xml.
> 
> Best regards Annie.
> 
> 2010/4/30, Chris Blouch <cblo...@aol.com>:
>> This has been covered before but generally there are three audio signal
>> levels: speaker, line and mic. Obviously speakers are high powered while
>> line level is the output you typically get from a CD player (not
>> headphone) or DVD player. Mic levels are very very tiny. There is a
>> diaphragm which vibrates with the sound in the air and moves a tiny coil
>> of wire near a magnet, generating a very small electrical signal. All
>> this means is that your Mac has a line-in jack expecting line-level
>> signals while mics produce something much much smaller. So to use most
>> mics with a mac you need something called a pre-amp. Pre-amps take the
>> tiny mic signal and, without adding a lot of noise, boost it up a couple
>> multiples.
>> 
>> So if all you want is a mic to skype with you could just go with some
>> USB all-in-one. If you want better quality then you'll want to get a
>> real mic and a preamp. Something cheap like this:
>> 
>> http://www.sweetwater.com/store/detail/TubeMP/
>> 
>> and a basic Shure SM58 would be a good start.
>> 
>> CB
>> 
>> Annie Skov Nielsen wrote:
>>> Hi all.
>>> 
>>> I have been trying with more microphones, if I could use an external
>>> microphone. I found one that I could connect to the line in, but the
>>> recordings is very low. I have a mac book pro with one mic/headphone
>>> and then I have the line in. Is there any way I could use the
>>> headphone/mic for an external mic.
>>> 
>>> Best regards Annie.
>>> 
>>> 
>> 
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