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Advanced Audio Microphones CM48 FET

Pricing & Availability

  • MSRP: $435


CM48 FET Documentation

OmnidirectionalCardioidBidirectionalAdvanced Audio Microphones CM48 FET

Multi-Pattern Condenser Microphone

The CM48 FET is a 3-pattern FET condenser microphone.

AK47 CapsuleThe capsule is Advanced Audio’s AK47, a 32mm version of the 34mm Neumann K47 design, made with 6-micron diaphragms. This capsule is a dual-sided design, which allows the microphone to offer multiple polar patterns.

The circuit is a 2-stage FET amplifier with an output transformer. It is identical to that of the CM87.

Three switches circling the base of the mic’s headbasket allow multiple configuration options:

  • Polar pattern: Cardioid, Omnidirectional, Figure-8
  • Pad: -10dB
  • High-pass filter: 100Hz rolloff

The CM48 FET ships with an elastic shockmount and an aluminum flightcase.

The Advanced Audio Microphones CM48 FET is also known as: CM48.

The mic was released in 2013.


Pickup Patterns Pads & Filters
Omnidirectional (n/a mV/Pa; n/a)
Cardioid (n/a mV/Pa; n/a)
Bidirectional (n/a mV/Pa; n/a)
  • Pad: -10dB (Via Switch)
  • Filter: HPF @ 100Hz (Via Switch)
Capsule Dimensions Impedance SPL/Noise
Capsule diameter: 32mm
Diaphragm gauge: 6 microns
200 Ohms (Low) Self-noise: 17.0 dB(A)
Weight Length Max Diameter Interface(s)
n/a n/a n/a
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power

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