The OP was incomplete with more details dribbled out as the OPer deflected and discounted the offered possible solutions. My question was attempting to get the OPer to give more clues as to the experience level and goals.

On my XP laptop under the audio properties the microphone input level can be set. The OP doesn't say why the level needs to be set in the Perl program or if it needs to be continiously changed. Maybe the OP wants to implement compression or some effect. I didn't want to invest too much effort in answering someone who didn't search google for the modules or to give better details up front but it is a topic I am highly interested in.

That's right Lotus1.

But anyway, i'll give it a short try tomorrow @work with my old Sennheiser MKE 66 (no XLR, no phantom powering, no preamp but a good old horse...) on my XP Box.

I installed Win32::SoundRec successfully on my XP box but unfortunately i didn't have that mic at hand.

Best regards, Karl

«The Crux of the Biscuit is the Apostrophe»

The install failed for me due to a missing dependancy. It said 'The module Win32::API::Prototype isn't available on CPAN.'