FMX-42a – 4 Channel Portable Mixer w/ 10-pin Camera Return


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Portable audio mixer with 4 XLR inputs and stereo XLR and mini-jack outputs. FMX-42a model comes equipped with 10-pin and mini-jack camera audio returns.


  • 4 balanced XLR line/mic inputs and pan controls
  • Switchable 48V phantom power and limiting
  • Professional quality VU meters
  • 2 balanced XLR outputs (line/mic switchable)
  • Stereo mini-jack output for DV cameras
  • 10-pin & mini-jack Camera Return (use MX-10 Cable)
  • Headphone out with level control
  • 6x AA battery powered
  • Optional A/C adapter

MX-10 Send/Return Breakout Cable for FMX-42a



  • Accessory for FMX-42a Portable Mixer
  • Send/return audio to/from camera via FMX-42a 10-pin connection
  • 10-pin Hirose male to 2 XLR male and 1 stereo 3.5mm male
  • Send audio to 2 recording devices via 10-pin connection and main XLR outs
  • 3 feet in length
SKU: FMX-42a Categories: , Tag:



Having 4 balanced XLR line/mic inputs with individual level and pan controls, the FMX-42a provides switchable (per channel) 48V phantom power and limiting, professional quality VU meters for accurate level setting, master level control, 1k tone generator, 2 balanced XLR outputs (line/mic switchable), stereo mini-jack output for DV cameras, 10-pin Camera Return, mini-jack Camera Return and a headphone monitor with level control.

The 10-pin camera return may also be used as a secondary stereo output, independent from the mixer’s main XLR outputs, using Azden’s MX-10 Cable.

The FMX-42a can be powered by either 6 internal “AA” batteries or an optional 12V DC external supply (Locking 4-Pin Hirose connector). A ballistic nylon carrying case is included.


    • Balanced or Unbalanced Output: 20 Hz – 30 kHz (+0/-1.5 dB)
    • Monitor Output: 30 Hz – 30 kHz (+0/-2 dB)


    • Signal-to-Noise Balanced Output: -120 dBu (A weighted, input equivalent level)
    • T.H.D. Balanced Output: less than 0.005% @ 1 kHz (at LINE position +19 dBu output)
    • Phantom Power Voltage: 48V (±4V)
    • Sample Tone Frequency: 1 kHz
    • Battery Requirement: 6 Alkaline “AA”
    • Battery Runtime: Approx.10 hours (Meter Illum & Phantom Power OFF)
    • External Power: 12V DC @ 200mA
    • Dimensions: 220mmW x 160mmD x 56mmH (without protrusions)9″W x 6 1/2″ D x 2 1/4″H (without protrusions)
    • Weight: 1,350 grams/3 lbs (without batteries)


    • 164mA (Meter Illum & Phantom OFF @ 9V)192mA (Meter Illum OFF, Phantom ON w/1 MIC @ 9V)125mA (Meter Illum & Phantom OFF @ 15V)


  • Balanced Input: XLR 3-pin Female x 4 (CH1, 2, 3 & 4)
  • Level +4 dBu (LINE) Standard: +4 dBu (electronically balanced)Maximum: greater than +26 dBuImpedance: 20kΩ
  • -30 dBu (MIC 1) Standard: -38 dBu (electronically balanced)Maximum: +4 dBuImpedance: 2kΩ
  • -55 dBu (MIC 2) Standard: -58 dBu (electronically balanced)Maximum: -15 dBuImpedance: 2kΩ
  • High Pass Filter (HPF)  100Hz – 6dB/oct


  • Hirose 10-pin Female for Hirose Plug Part #RM15TD-10P3.5mm (1/8″) Stereo Mini-JackInput Level: -20 dBu – +19 dBu (unbalanced)Impedance: 11kΩ


  • Balanced Outputs: XLR 3-pin Male x 2 (Output L & R)
  • Unbalanced Output: 3.5mm (1/8″) Stereo Mini-Jack
  • Monitor Output: 6.3mm (1/4″) Stereo Jack


  • +4 dBu Standard: +4 dBu (electronically balanced, greater than10kΩ load)Maximum: +20 dBu (electronically balanced, greater than 10kΩ load)Impedance: 600Ω
  • -36 dBu Standard: -36 dBu (electronically balanced, greater than 10kΩ load)Maximum: -20 dBu (electronically balanced, greater than 10kΩ load)Impedance: 600Ω


  • Standard: -36 dBu (electronically balanced, greater than 10kΩ load)Maximum: -20 dBu (electronically balanced, greater than 10kΩ load)Impedance: 120Ω


  • Maximum: +1 dBu (32Ω load at 9V)16-100Ω load recommended
  • Meters – Standard Output Level: 0 VU (+4 dBu)

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