B-Stock, Finhol Edge Mic Kit, built-in condenser microphone for acoustic guitar, steel strings or nylon strings, also suitable for acoustic bass and other acoustic instruments, suitable to a sound hole have through that the microphone can be installed, by the low weight and the small area of Contact impairs the Edge microphone not the sound of the instrument, including preamp and phantom power on battery, mounting using the supplied Velcro strip, the system can be connected via the output socket to any guitar amp or on every mixer with a standard guitar cable, housing made of solid maple, dimensions: 50 x 40 x 20mm, weight only 25 grams, sound conversion condenser capsule, characteristic cardiod, asymmetrical output, low impedance, output via supplied socket 6.3 mm (device is on when plugged in), volume control, battery 3 V, operating time approx 250 ours, frequency response: 50 Hz - 20 kHz, made in germany., B-Stock with full warranty, may have slight traces of use