Where are the microphones for the black box located in the cockpit? All modern commercial airliners have a CVR (Cockpit Voice Recorder) on-board to record what the pilots are saying during the duration for a flight. I feel that the location of the microphones is important because they should be in a place that can easily pick up the cockpit conversations but should also be discreet enough to avoid accidental damage or even intentional sabotage by hijackers/suicidal pilots.

So where are the recording devices or microphones located in the cockpit for this? 

Moreover:


Is there more than one microphone in the cockpit to provide stereo sound? 
If so, do investigators listen to the recording from each microphone?
Are there any pictures of these microphones in the cockpit?
The headsets worn by the pilots have a microphone arm. These audio channels are split and routed to the black box.

Additionally, there is at least one microphone embedded in the cockpit, usually overhead.

The black box can support recording of up to 4 audio channels, so each channel can be examined separately.

Since the headsets and overhead microphone are inside the cockpit, stereo audio is available.

Can't find any pictures for you, sorry!

Seethis sources:

Avstop

FAA (pdf)