FET Condenser Microphone

Sterling ST31 FET Condenser Microphone


  • Hyper-Cardioid Polar Pattern
  • Warm detail, low-noise
  • Black nickel-plated all brass body
  • Stainless steel head and grille assembly
  • Requires 48V phantom power


  • Rugged vinyl zipper case
  • HM1 swiveling hard mount
Optional SM3 shock mount available


The Sterling ST31 is an affordable microphone for making high-quality recordings of instruments.

The ST31 features a mid-size ¾” diameter, 6-micron gold-evaporated Mylar® diaphragm that is optimized to capture definition and detail of acoustic guitars, pianos, percussion, drum overheads, and more. The low-noise FET circuitry provides smoothness and warmth.


Preamp: Low-Noise FET Circuitry
Polar Patterns: Hyper-Cardioid
Frequency Response: 20Hz – 18kHz
High Pass Filters: N/A
Attenuation Pad: N/A
Sensitivity: 5mV/Pa
Maximum SPL: 146dB


Equivalent Noise: < 28dB SPL – A Weighted
Typical Load Impedance: >500 Ohms
Output Source Impedance: 200 Ohms transformerless
Dimensions: 7.0" long, 1.2" max. dia.
Weight: 7.4 oz.
Power: Phantom Power