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Earthworks QTC40 40kHz Omni Recording Microphone (QTC40) for recording quiet sources

with omnidirectional polar pattern

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What's in the box:

  • Earthworks QTC40 Omnidirectional Condenser Microphone (Single Microphone)
  • Wood Storage Box
  • Microphone Clip
  • Frequency Response Chart
  • Limited 15-Year Warranty

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The QTC40features a near-perfect omnidirectional polar pattern that is uniform across all specified frequencies, allowing the microphone to capture rich and consistent detail at any position around the capsule. With an extended 3Hz-40kHz ruler-flat frequency response (with no frequencies exaggerated or attenuated) the result is a more accurate representation of the original sound. Unit is time coherent, precisely capturing high and low frequency sounds with no phase errors, which will smear transients and create other time related distortions.

The QTC40 has an SPL rating of 140dB for plenty of headroom, with no distorition and no proximity effect so the mic can be set as close as desired to the sound source. It is ideal for for recording quieter sources such as vocals, strings and distant miked orchestras or choirs, as well as drum overheads, close-miked wind and percussion instruments, and foley.


  • Frequency response to 40kHz and excellent impulse response
  • Perfect for recording full detail of instruments in the studio yet robust and subtle enough to record bird sounds in the jungle
  • Intended for detailed sources
  • Omnidirectional polar pattern
  • Flat frequency response, fast impulse response and exceptional polar characteristics
  • Accurate and uncolored
  • Handles sound levels up to 142dB with no proximity effect or handling noise
  • Requires 48V Phantom Power

Specifications for the Earthworks QTC40 40kHz Omni Recording Microphone

{ "QTC40" : "40kHz omnidirectional microphone for quiet sources", "Frequency Response" : " 3Hz to 40kHz ±1dB", "Polar Pattern" : " Omnidirectional", "Sensitivity" : " 34mV/Pa (-29dBV/Pa)", "Power Requirements" : " 24-48V Phantom, 10mA", "Max Acoustic Input" : " 140B SPL", "Output" : " XLR (pin 2+)", "Output Impedance" : " 65Ω balanced (between pins 2 & 3)", "Min Output Load" : " 600Ω between pins 2 & 3", "Noise" : " 20dB SPL equivalent (A weighted)", "Dimensions L x D" : " 229mm x 22mm (9 x .860 inches)", "Weight" : " .5 lb. (225g)" }

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