ST51 - Class-A FET Condenser Microphone

Sterling ST51 FET Overview

The Sterling ST51 is an affordable, true-condenser large diaphragm recording microphone with outstanding sound and construction. The ST51’s 6-micron, gold-evaporated Mylar® diaphragm is optimized to capture definition and detail for both vocal and instrument recordings. Class-A FET circuitry provides unparalleled smoothness and warmth to your recordings.

Sterling ST51 FET Features

  • Cardioid Polar Pattern
  • Large 1″” all brass capsule, hand assembled and oven baked for long term stable operation
  • Thin 6-micron gold-evaporated Mylar® diaphragm provides sonic detail and accuracy
  • Custom-wound nickel core output transformer
  • Black nickel-plated all brass body
  • Stainless steel head and grille assembly
  • Requires 48V phantom power

Sterling ST55 FET Includes

  • HM-2 hard mount
  • Zipper case
Optional SM4 shock mount available
Sterling ST51 Microphone

Sterling MX3 Specifications

Preamp: Class-A FET
Polar Patterns: Cardioid
Frequency Response: 20Hz – 18kHz
High Pass Filters: N/A
Attenuation Pad: N/A
Sensitivity: 30mV/Pa
Maximum SPL: 134dB
Equivalent Noise: 22dB SPL – A weighted



Typical Load Impedance: >500 Ohms
Output Source Impedance: 200 Ohms transformer isolated
Dimensions: 7.5” long, 1.8” max. dia.
Weight: 1.1 lbs
Power: Phantom Power