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Wunder Audio CM7 FET

Pricing & Availability

  • MSRP: $2,495


CM7 FET Documentation

CardioidWunder Audio CM7 FET

Cardioid Condenser Microphone

The CM7 Fet is a modern homage to Neumann’s famous U47 Fet. Both are transformer-coupled solid-state mics with a K47/K49-style large-diaphragm capsule.

Wunder’s K47 capsule, like the original, is a single-backplate, center-terminated, dual-diaphragm design.

The mic’s amplifier circuit is not a strict recreation of the Neumann design; rather, it has been updated with modern components.

Mike Castoro, 2010

[The CM7 Fet] has a more modern FET… The original was designed when solid-state was very new, so we took advantages of newer FET technology.

The output transformer is custom wound in the US, specifically for this microphone.

The mic’s body shape and size, and the dimensions and construction of the grille, are identical to the U47Fet.

Brad Avenson of Avenson Audio participated in the design of this microphone.

The Wunder Audio CM7 FET is also known as: CM-7 FET.

The mic was released in 2009.


Frequency Response - CardioidClick Graph to Compare!
CM7 FET Cardioid Frequency Response Chart
Pickup Patterns Pads & Filters
Cardioid (n/a mV/Pa; 30 - 20,000 Hz)
Capsule Dimensions Impedance SPL/Noise
Capsule diameter: 34mm
Diaphragm gauge: 6 microns
n/a Max SPL: 143 dB
Weight Length Max Diameter Interface(s)
n/a 160mm (6.30'') 63mm (2.48'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 48v

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