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OmnidirectionalCardioidBidirectionalCAD Audio E300S

Multi-Pattern Condenser Microphone

The E300S is a revised version of CAD’s E300 microphone. The new version is intended to sound the same as the E3002.

The E300S has the same capsule and circuit design as the older version of the microphone. Like the earlier version, it uses a pair of 9V nickel metal hydride batteries to power the circuit; phantom power, when available, is used to recharge the batteries.

The microphone’s behavior is configured via four switches on the front of the body:

  • Pad: flat or -20dB
  • HPF: flat or -6dB/octave @ 135Hz
  • Polar pattern: Cardioid, Omni, or Figure-8
  • Power: on/off

The capsule is a large-diaphragm true condenser. The photos we’ve seen show the characteristic backplates of the K67. According to measurements submitted by an E300S owner, the capsule’s outside diameter is 33.6mm; the suspended area of the diaphragm has a diameter of 26.3mm.

According to CAD, the impedance conversion circuitry is linear with respect to frequency response; there is no fixed EQ within the circuitry.

See the E300v2 profile for full specifications.

Permalink: CAD Audio E300S

The mic was released in 2012.


Frequency Response - OmnidirectionalClick Graph to Compare!
E300S Omnidirectional Frequency Response Chart
Frequency Response - CardioidClick Graph to Compare!
E300S Cardioid Frequency Response Chart
Frequency Response - BidirectionalClick Graph to Compare!
E300S Bidirectional Frequency Response Chart
Pickup Patterns Pads & Filters
Omnidirectional (20 mV/Pa; 20 - 20,000 Hz)
Cardioid (20 mV/Pa; 20 - 20,000 Hz)
Bidirectional (20 mV/Pa; 20 - 20,000 Hz)
  • Pad: -20dB (Via Switch)
  • Filter: HPF: -6dB/octave @ 135Hzc (Via Switch)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 26.3mm
Capsule diameter: 33.6mm
220 Ohms (Low) Max SPL: 145 dB
Self-noise: 12.0 dB(A)
Weight Length Max Diameter Interface(s)
510g (17.99oz) 190mm (7.48'') 77mm (3.03'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Has battery compartment

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