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Subject: re: microphone amplifier
From: ajf_at_midmaine.com
Date: 2004-03-09


I think the item in the link you gave is just a power supply, not an
amplifier. Electret mics require a bias voltage of about 9 volts and a
unit in this price range would probably supply just that.

To get gain and bias voltage, look at products from Sound Professionals or
Microphone Madness. Be prepared for "sticker shock"

http://www.soundprofessionals.com/cgi-bin/gold/category.cgi?category=540&template=mics

http://www.microphonemadness.com/mmsterpreamh.html

>> In case some of you are still looking for a
>> microphone amplifier, go to this link:
>>
> http://andreaelectronics.com/Buy/ProductDesc/APS100.htm>
>
>>
>> Haven´t ordered it yet, but I think this probably is
>
>> something helpful.
>>
>> Jan
>
> I purchased the amplifier mentioned. It seems to work
> OK but I have run into a couple of problems and I'm
> not sure if it's the archos or the mic amplifier or
> the rockboxx firmware (using version 2.1). First, the
> mic I have is a stereo mic, but I'm only getting one
> channel (left) on the archos. Yes, I have set to
> line-in and stereo mode in the recording settings.
> The other problem I have is that the recording is just
> too quiet! Why am I only able to increase the gain to
> 19.2 in line-in mode? In microphone mode, I am able
> to go up to around 40.
>
> Has anyone else tried this amp with success? If not,
> can anyone recommend a good one or a microphone that
> works well?
>
>
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