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Azden FMX-42a 4-Channel Microphone Field Mixer



  • 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

R10,350.00 Inc. VAT

The Azden FMX-42a is a portable 4-channel audio mixer designed for professional and semi-professional field audio capturing. The FMX-42a features 4 balanced 3-pin XLR microphone inputs with individually switched +48VDC phantom power. A pair of balanced XLR outputs provide line or mic level (switchable) signal to cameras, recorders, etc.

Additional features include a switchable input limiter to reduce the possibility of overload distortion, Left/Center/Right pan switches on all input channels and enhanced circuitry for improved signal-to-noise ratio. A 10-pin camera return is also provided. Overall, the Azden FMX-42a proves to be an affordable field mixing solution for event videos, ENG/EFP applications, documentaries, and more.

Balanced Mic Inputs
The FMX-42a features 4 XLR microphone inputs. The balanced inputs deliver high gain and low noise floor
VU Meters
Dual analog meters provide a comprehensive read on audio level
Balanced Line or Mic Level Outputs
Dual balanced line or mic level switchable outputs via XLR male connectors provide balanced audio signal to inputs on cameras and additional mixers
2-Channel Addressable Outputs
Incoming signal from either channel can be assigned to either left or right outputs if signal isolation is desired
Input Limiters
Both inputs feature high quality switchable limiters. The limiters protect against peak distortion due to overload
Camera Return
A 10-pin camera return is provided for video applications
Inputs 4 x Balanced XLR Female
Output 2 x Balanced XLR Male
1 x 1/4″ Phone
1 x 3.5mm Mini
1 x 10-Pin Camera Return
Monitor/Headphone Out 1/4″ Phone
3.5mm Mini
Link Input/Output No
Impedance Line: 20 kOhms
Mic: 2 kOhms
Gain Standard: +4dBu (> 10 kOhm Load) -2dBu (600 Ohm Load)
Maximum: +20dBu (>10 kOhm Load) +13dBu (600 Ohm Load)
Hum & Noise Balanced Output: -120dBu (A weighted, Input Equivalent Level)
Frequency Response 20Hz – 30kHz (±1.5dB)
Distortion < 0.005% @ 1 kHz (@ LINE Position +19dBu Output)
Metering Standard Level: 0 VU (+4dBu)
Control Voltage Out No
Phantom Power +48V (±4V)
Operating Temperature Not Specified by Manufacturer
Power Battery Requirement: 6 Alkaline “AA”
Battery Runtime: Approx 10 Hours (Meter Illumination & Phantom Power OFF)
External Power: 12VDC @ 200mA
Current Drain: 155mA (Meter Illumination & Phantom Power OFF @ 9V)
195mA (Meter Illumination OFF/Phantom Power ON w/2-SGM-1000 @ 9V)
Base Dimensions (WxHxD) 8.6 x 1.9 x 5.9″ (220 x 56 x 150mm)
Weight 6 lbs (2.72kg)
SKU: AZD-FMX42A Categories: , Product Brand:

Balanced Input 4 x XLR 3-pin female (CH 1, 2, 3 & 4)
Level Line-
Standard: +4 dBu (electronically balanced)
Maximum: > +26 dBu
Impedance: 20 kOhmsMIC HI-
Standard: -38 dBu (electronically balanced)
Maximum: +4 dBu
Impedance: 2 kOhmsMIC LO-
Standard: -58 dBu (electronically balanced)
Maximum: -15 dBu
Impedance: 2 kOhms
High Pass Filter 100 Hz – 6 dB/oct
Input Level -20 to +19 dBu (unbalanced)
Impedance 11 kOhms
Return Input Hirose 10-pin female for Hirose plug part #RM15TD-10P
1/8″ / 3.5 mm stereo mini-jack
Input level: -20 to +19 dBu (unbalanced)
Impedance: 11 kOhms
Balanced Output 2 x XLR 3-pin male (output L & R)
Unbalanced Outputs 1/8″ / 3.5 mm stereo mini-jack
Monitor Output 1/4″ / 6.3 mm stereo jack
Balanced Output Level LINE-
Standard: +4 dBu (electronically balanced, greater than 10 kOhms load)
Maximum: +20 dBu (electronically balanced, greater than 10 kOhms load)
Impedance: 600 ohmsMIC-
Standard: -36 dBu (electronically balanced, greater than 10 kOhms load)
Maximum: -20 dBu (electronically balanced, greater than 10 kOhms load)
Impedance: 600 ohms
Unbalanced Output Level Standard: -36 dBu (electronically balanced, 10 kOhms load)
Maximum: -20 dBu (electronically balanced, 10 kOhms load)
Impedance: 120 ohms
Monitor Output Max Output: +1 dBu (32 Ohm load at 9 V), 16 – 100 Ohm load recommended
Meters Standard Output Level: 0 VU (+4 dBu)
Digital Output No
Frequency Response Balanced or Unbalanced Output: 20 Hz – 30 kHz (+0/-1.5 dB)
Monitor Output: 30 Hz – 30 kHz (+0/-2 dB)
Signal-to-Noise Ratio Balanced Output: -120 dBu (A weighted, input equivalent level)
THD Balanced Output: < 0.005% @ 1 kHz (at LINE position +19 dBu output)
Phantom Power 48 V (±1.5 V)
Sample Frequency 1 kHz
Battery Requirement 6 x alkaline AA
Current Drain 164 mA (Meter Illum & Phantom OFF @ 9 V)
192 mA (Meter Illum OFF, Phantom ON w/1 MIC @ 9 V)
125 mA (Meter Illum & Phantom OFF @ 15 V)
External Power 10.5 ~ 17 VDC @ 200 mA
Dimensions 9.0 x 6.5 x 2.3″ / 220 x 160 x 56 mm (without protrusions)
Weight 3.0 lb / 1.35 kg (without batteries)
Packaging Info
Package Weight 3.645 lb
Box Dimensions (LxWxH) 10.4 x 6.85 x 3.75″
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