Wired microphones

Headset acoustic amplifier to improve hearing of conversations, radio and television broadcasts

The SA69 wired preamplified microphone is a wired microphone which features a microphone preamplifier able to allow picking up a whisper up to 10-12 yds/meters away (-53db gain). 

Ultra-miniature listening microphone, suitable for listening and recording with any recording system or device

Ultra miniature battery-powered wired microphone with embedded electronic preamplifier and pinhole (1mm) microphone capsule

Headset-shaped amplified audio microphone to better listen to sounds and conversations up to a maximum distance of 10 yds/meters

Internet microphone

Professional preamplified microphone for voice conversation recording, disguised as an ordinary ballpoint pen.