K&K PowerMix Trinity 12-String, for 12-string acoustic guitar, combines the Pure 12-string 3-Head and FanTaStick undersaddle pickups and the Trinity microphone, with onboard 3-channel preamp, all parts of the system..."

Schertler Dyn-P-P48 Piano Microphone, fully balanced, active, dynamic Contact microphone for piano, output impendance 4.7 Kohm @ 1 KHz, frequency response 20 Hz to 20 kHz, dynamic range 139 dB, 145 dB typical, balanced...