The CAD M9 is a cardioid single tube externally biased condenser microphone that features servo-valve technology. The M9 is a natural bridge between the valve technology developed for the VX2 microphone and the servo opamp technology developed for the M-Series microphones. The head amp in the M9 microphone is a 12AX7 tube in a circuit that is optimized for super wide dynamic range and low noise. The output stage is a high speed dual opamp in a balanced differential configuration that allows long cables to be used without affecting microphone performance.

• Type: Side address, true condenser.
• Capsule: 1.1" inside diameter, gold sputtered.
• Frequency Response: Capsule: 10Hz - 20 kHz.
  Head Amplifier: 4Hz - 200KHz
• Polar Pattern: Cardioid.
• Impedance: Low (200 ohms nominal).
• Output Level At 1 kHz.:
  Open Circuit Voltage:
  -53 dB (0 dB = 1 volt per microbar).
  -56 dB (0 dB = 1 volt per microbar).
• Dynamic Range :
  118.5 dB (Noise floor to max SPL @ less than 0.2% THD).
  120 dB (Noise floor to max SPL @ less than 5.0% THD).
• Equivalent Noise Level: 15 dB Equivalent SPL, A weighted.
• Maximum Output Level: +8 dBV (@ 140 dB SPL, less than 5.0% THD).
• Maximum SPL:
  154.5 dB SPL 
  156 dB SPL (-16dB pad).
• Total Harmonic Distortion:
  Less than 0.2% @ 138.5 dB SPL without pad.
  Less than 5.0% @ 140 dB SPL without pad.
• Switches:
  Hi-Pass: (3dB @ 100Hz.)
  Pad: 0dB & -16dB (Non-Capacitive)
• Capsule Capacitance: 68 pF.
• Powering:
  Included MV200 analog power supply.
  Voltage: Selectable 117V/220V, 50/60Hz
• Connector:
  7 pin XLR, on microphone and power supply.
  3 pin XLR, audio out from power supply.
• Cable: Professional quality 7 conductor, 30 ft. long. Gold plated connectors.
• Finish: Blue housing, satin nickel plated screen assembly with black accents.