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-H-P48 Harp Micro, active dynamic Contact microphone, to be mountd on the instrument with adhesive putty, needs phantom power, output impedance 4.7 Kohm @ 1 KHz, frequency response 20 Hz to 20 kHz,...