FET Condenser Microphone

Sterling ST55 FET Condenser Microphone


  • Cardioid Polar Pattern
  • Large 1″” all brass capsule, hand assembled and oven baked for longterm stable operation
  • Ultra-thin 3-micron gold-evaporated Mylar® diaphragm provides sonic detail and accuracy
  • Disk ResonatorTM design extends high-frequencies naturally
  • Custom-wound nickel core output transformer
  • High-pass filter and -10dB pad
  • Black nickel-plated all brass body
  • Stainless steel head and grille assembly
  • Requires 48V phantom power


  • HM2 hard mount
  • Zipper case
Optional SM4 shock mount available


The Sterling ST55 professional recording microphone raises the standard for acoustic capture of vocals and instruments.

Based on an ultra-thin 3-micron gold-evaporated Mylar® diaphragm, the Sterling ST55 also features a Disk ResonatorTM that naturally extends high frequency response. Combined with Class-A FET circuitry, the ST55 provides incredible smoothness, detail and articulation for your recordings.


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

Sterling ST55 Class-A FET Condenser Microphone with Shock Mount