You will find more information on where to buy headphones, on ALIS, BABELS, the Social Forums... etc on the below websites.
UPDATE : We had a look around for microphones, earphones and power supplies:
At CONRAD Electronic Shop (http://www.conrad.fr) we found the following equipment and prices:
- UNIVERSAL POWER SUPPLY (External):
- HQPRODUCTS Ref. PSUPSMP1
- DC - 9-12 mV - 250 mA with 6,3 mm jack = 10 Euros
- ELECTRIS F59520 Réf. BA120 CE
- Switching Power Adaptor 90/240 V - 1200 mA = 6 Euros
- MICROPHONE:
- Look around Ebay/Thrift Shops (Cash Converters) for XSOUND XS-M1 - you can get them for less than 10 Euros (+cable)
- AUDIOPHONY DMC12 = 15 Euros
- BEHRINGER - Set of 3 microphones = 30 Euros
- EARPHONES:
- SAN SE20
- SE20 Earbuds - 1m70 cord = 1,5 Euros each (you will need 20 - 15 + 5 extra)
- WE CAN GET THEM HALF PRICE (BULK) WITH 3 METER CORDS - email us.
- ABEIER COMPANY (China) - with longer cords (2,5 meters) :
- EARPHONE EXTENSION CABLE (to allow people to listen in from further away)
- NOT NECESSARY IF YOU USE THE 3-METER CORD EARBUDS
- MONACOR MEC-635 - Ref. 06.1850
- 6 meter Stereo extension cable = 2.50 Euros each (you will need 15)