FENDER GROOVE TUBESMD1B TUBE MICROPHONE MD1B TUBE MICROPHONE Vintage-style non-disk capsule design optimized for classic vocal recordings Warm sounding, low-noise, Class A Tube electronics Side address cardioid polar pattern Large 1 1/4" all brass capsule with a 1" ultra-thin 3 micron gold-evaporated mylar diaphragm Polished stainless steel body and grille