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EarthWorks QTC40

40kHz Omni Recording Microphone 

Low noise omnidirectional microphone designed for recording quiet sources

  • 4Hz – 40kHz flat frequency response

  • Omnidirectional polar pattern

  • Handles up to 138dB SPL without distortion


    Delivering sound so detailed and real, the QTC40 brings recordings to life and delivers a truly accurate snapshot of your sound.

    Its near-perfect omnidirectional polar pattern is uniform across all specified frequencies, letting the microphone capture rich and consistent detail at any position around the capsule.

    With an extended 4Hz – 40kHz ruler-flat frequency response (with no frequencies exaggerated or attenuated) the result is a more accurate representation of the original sound.

    The QTC40 is time coherent, precisely capturing high and low frequency sounds with no phase errors, which will smear transients and create other time related distortions.

    With an SPL rating of 138dB the QTC40 has plenty of headroom, so there is no need to worry about the microphone distorting. And there is no proximity effect, you can get the QTC40 as close as you want to the sound source.

    Ideal for for recording quieter sources such as vocals, strings and distant miked orchestras or choirs, these low noise omnis are also an excellent choice for drum overheads, close-miked wind and percussion instruments, and foley.

      • With a frequency response to 40kHz and excellent impulse response, it will reproduce sounds with incredible detail that are true and life-like, making it an ideal and affordable choice for recording applications
      • Perfect for recording the accuracy and 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 138dB with no proximity effect or handling noise
    • Frequency Response: 4Hz to 40kHz ±1dB

      Polar Pattern: Omnidirectional

      Sensitivity: 34mV/Pa (-29dBV/Pa)

      Power Requirements: 24-48V Phantom, 10mA

      Max Acoustic Input: 138B 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) 

    • Acoustic String Instruments
    • Brass/Woodwinds
    • Choir
    • Piano
    • Recording
    • Studio Vocals
    • Theater