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Accurate reproduction of the original M49 microphone.

With a 9 pattern switch located on the power supply.

Vintage capture with modern components

Mic features:

34mm K47 type capsule response.

Traditional triode tube circuit typical of the M49C.

We have substituted the soldered in tube for a 7 pin socketed 5654w/6J1. 

An output transformer with the same footprint and turns ratio as the original BV11a used in the M49C.



  • Pattern Selector: 9-pattern from power supply
  • Circuit type: Single stage class "A" tube, transformer coupled
  • Capsule: centre fed K47 single back-plate dual diaphragm
  • Capsule Polarization: 56V and rear diaphragm 0V in passive-cardioid
  • Tube type: 7-pin socketed military grade selected military 5654w/6J1 pentode strapped as a triode
  • Transformer: Full size BV11a dual bobbin footprint with 10:1 ratio.
  •  Distortion: <.5%@20Hz/+10dBu and <0.05%@50Hz/+10dBu
  • Max SPL: 138dB
  • Frequency response: 25Hz-20kHz + or - 3db
  • Equivalent Noise Level: <14dB (A- weighted) selected tube
  • S/N Ratio: >86dB (Ref. 1Pa A-weighted)
  • Sensitivity: -32dBu
  • Output impedance <200 ohm (load impedance <1.2K)
  • Output connector: Male XLR, 7-pin gold plated
  • Switchable 120v-220v power supply
  • 15' Gold plated 7 pin cable
  • Heavy Duty shock-mount that easily and tightly clips on to the mic
  • Sturdy travel case 


CM49LE Advanced Audio Microphone

  • Your microphone has been manufactured and tested to the highest quality standards by Advanced Audio Microphones. This Limited Warranty offered by Advanced Audio Microphones covers defects in material or workmanship for 2 years from the date of purchase. This warranty can be extended to a total of five years upon completion of on-line registration. We will repair or replace any Advanced Audio microphone that fails to meet factory specifications during the warranty period. 

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