Reference Microphone

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The optional RTA-M real time audio analyzing mic is the perfect accessory tool for the DriveRack PA series (PA, PX, PA+, PA2) and 260. Used in conjunction with the System Setup Wizard and Auto EQ Wizard the RTA-M is ideal for optimizing the sound quality of even the most difficult of acoustic environments.

The RTA-M is an omni-directional, flat frequency measurement microphone specially designed for the Driverack series to pick up all frequencies from 20 Hz to 20 kHz , ensuring accurate "pinking"/real-time analysis of your audio. It runs on phantom power (supplied by the Driverack units) and comes with a clip and case.

Recommended for: Studio, Tour, Portable.


  • Polar Pattern : omni-directional
  • Element : back electret-Condenser
  • Frequency Response : 20 Hz - 20 kHz
  • Impedance : 250 30% (at 1,000Hz)
  • Sensitivity : -63 dB +-3 dB ( 0 dB=1V/ microbar 1,000 Hz indicated by open circuit )
  • Operating Voltage : phantom power 9V-52VDC


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file type icon RTA-M CAD drawing front
en updated: Nov 2023
  en  16.1 KB Nov 2023
file type icon RTA-M Cut Sheet-English
en updated: Nov 2023
  en  168 KB Nov 2023

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Element Back Electret Condenser
Polar Pattern Omnidirectional
Frequency Range 20 Hz ~ 20,000Hz
Impedance 250 Ω ± 30% (@ 1KHz)
Operating Voltage 9~52V DC Phantom Power
Sensitivity -63 dB ± 3 dB (0 dB=1V/microbar 1,000 Hz indicated by open circuit)
Dimensions Ø10(mic head) x 145(L) mm



What is the differenece between the dbxRTA-M and the M2 microphone (which ships with the DriveRack PX)?

The RTA-M is an accessory, which can be purchased separately. The M2 microphone is not sold separately and ships with the Driverack PX. The M2 microphone uses the same element as the RTA-M, but has a plastic housing where the RTA-M's housing is metal, so the M2 is not quite as rugged as the RTA-M. Also, the RTA-M comes with a hard-cover case. However, the specifications on these two microphones are very similar.

Note: You can use these two microphones interchangably between the different DriveRack models.