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Azden FMX-42a 4 Channel Field Mixer

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  • 4 Channel Field Mixer
  • 4 XLR inputs
  • Switchable phantom power
  • 2 XLR outputs plus a mini-plug output
  • Adjustable input level monitor level
  • VU meters
  • Switchable input limiter

The Azden FMX-42a Field Mixer features 4 XLR inputs and switchable phantom power, 2 XLR outputs plus a mini-plug output, adjustable input level monitor level and VU meters and a 10-pin and mini plug camera return. It is the most feature-laden field mixer from Azden, it  includes a switchable input limiter that reduces the possibility of overload distortion, enhanced circuitry for reduced signal to noise ratio and Left-Center-Right Pan switches on all input channels. All four of the 3-pin XLR inputs have switchable +48V DC Phantom Power.

Technical Specs:

Frequency ResponseBalanced and Unbalanced Output:
20 Hz – 30 kHz (+0 / -1.5 dB)
Monitor Out: 30 Hz – 30 kHz (+0 / -2 dB)

Balanced Output: -120 dBu
(A weighted, Input Equivalent Level)

Balanced Output: <0.005% @ 1 kHz (@ LINE position +19 dBu output)
Phantom Power Voltage: 48V (± 4V)
Sample Tone Freq: 1 kHz


Battery Requirement: 6 Alkaline “AA”
Battery Runtime: Approx. 9 hours (Meter Illum. & Phantom Power OFF)
External Power: 12VDC @ 200 mA (10.5-17VDC – Locking 4-Pin Hirose Connector)

Current Drain:
164 mA (Meter Illum. & Phantom Power OFF – @ 9V)
192 mA (Meter Illum. OFF/Phantom Power ON w/1 mic@9V)
125mA (Meter Illum. & Phantom OFF @15V)

56H x 220W x 160D mm (without protrusions)
2.25H x 9W x 6.5D inches (without protrusions)
Weight: 1350 g (w/o batteries) – 3 lb (w/o batteries)

Balanced Input:
XLR 3-pin Female x 4 (CH1, 2, 3 and 4)

Line Input – Standard : +4 dBu (electronically balanced)
- Maximum: > +26 dBu

Mic 1  – Standard: -38 dBu (electronically balanced)
- Maximum: +4 dBu
Impedance: 2k ohm

Mic 2  – Standard:-58 dBu (electronically balanced)
- Maximum: -15 dBu
Impedance: 2K ohm

High Pass Filter (HPF):
100 Hz – 6 dB/oct

Return Inputs:
Hirose 10-pin Female for Hirose Part #RM15TD-10P
3.5mm (1/8″) Stereo Mini-jack
Input Level: -20 dBu – +19 dBu (unbalanced)
Impedance: 11k ohm

Balanced Output: XLR 3-pin x 2 (Output L and R)
Hirose 10-pin Female
Unbalanced Output: 3.5 mm (1/8″) Stereo Mini-jack
Monitor Output: 6.3 mm (1/4″) Stereo jack


Electronically Balanced Output
Standard: +4 dBu (> 10 k ohm load)
Maximum: +20 dBu (>10 k ohm load)
Impedance: 600 ohm

Electronically Balanced Output
Standard: -36 dBu (> 10 k ohm load)
Maximum: -20 dBu (>10 k ohm load)
Impedance: 600 ohm

Unbalanced Output
Standard:-36 dBu (> 10 k ohm load)
Maximum:-20 dBu (> 10 k ohm load)
Monitor Out – Max.: +1 dBu – 32 ohm @9V
(16-100 ohm load recommended)

Standard Level: 0 VU (+4 dBu)

More Information
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WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to
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