Spy and Security Store features unique and hard to find microphones and audio accessories. Browse our selection of tiny audio microphones, audio amplifiers, audio transmitters, etc. Detect Ear Hear up to an amazing 300 Yards with this microphone Compare At: $599.95 Sale Price: $499.95 Bionic Ear Parabolic Microphone & Amplifier Economical Parabolic Microphone & Audio Amplifier Compare At: $229.95 Sale Price: $179.95 EAR2000 Excellent for listening in or through walls or floors. Compare At: $199.95 Sale Price: $189.95