MK-012 Figure-8 Stereo-head for MK-012 preamp with figure-of-eight directional characteristic MK-012AM Ambient Microphone 4-D preamp for ambient recording, can be used with MK-012, MK-102 and MK-103 heads MKL-012 Tube Microphone The tube preamplifier for MK-012, MK-102, MK-103, MK-104 and MK-101 capsules