MLM42S Mic/Line Mixer

MLM42S Mixer

MLM42S Mixer

Four Mic/Line Inputs with a Mono Output.

Features include:

  • Input Level controls with Overload indicators
  • 15 Volt Phantom Power for mics
  • Dedicated mic and line input jacks
  • Each input has 3-band Accelerated-Slope™, full-cut tone controls
  • Four quality mic preamps, quiet to -126 dBu EIN
  • Post-mix Effects loop includes Wet/Dry pan control
  • RCA unbalanced; XLR & 1/4" TRS balanced parallel outputs
  • Balanced outputs are Mic or Line selectable

MLM42S Mic/Line Mixer


The evolution of the entertainment industry has necessitated the creation of an outboard mic/line device to compliment existing mixing consoles. Whether you’re recording, mobile mixing, or broadcasting, there are occasional needs to expand your existing arrangement. Frustrations abounded when it came to adding mics for interviews, karaoke, and live performances because it was cost prohibitive. Now it’s quite inexpensive to enhance your existing gear and expand the number of live mics for any gig. The MLM42S is unique. These mic preamps give you the studio-grade quality you need.

Applications are everywhere. The MLM42S is designed to fit into a variety of situations where cost is an issue and Rane quality is a must:

  • Live Sound
  • Studio and Remote Radio & Television Broadcasting
  • Professional Night Club
  • Fixed Commercial Installations
  • DJ Mixer (Mic) Expansion
  • Karaoke

Application: Small Music P.A.

MLM42S Application

The MLM42S can mix four mics or instruments, each with 3-band tone controls. The Effects Return can be a fifth input when using a line-level instrument like a keyboard. The RCA outputs easily connect to a recording device. A small portable rack could contain the wireless receiver or an amplifier.

MLM42S Expanded

The MLM42S can double its inputs as your needs grow. Simply connect the Effects Send of the first mixer to the Effects Return of the second mixer, with the ability to daisy-chain more. Set the Effects control on the second mixer to "Wet."

MLM42S Tone Controls

Rane’s patented tone control technology produces steeper slopes than normal, thus allowing boost/cut of high and low frequencies without disturbing the critical midband frequencies. The MLM42S features full-cut Tone Controls, allowing much greater contouring than possible with regular controls.


PDF "Accelerated Slope Tone Control Equalizers"

MLM42S Specifications

Parameter Specification Limit Conditions/Comments
Mic Inputs: Type Active balanced   Burr-Brown INA 163
..........Connectors (Mic/Line) XLR / TRS   Pin 2 = (+) hot / Tip-Ring-Sleeve
..........Input Imped. (Mic/Line) 836 / 3.32k Ω 1% each leg, 1 kHz
..........Gain Range (Mic/Line) 12 to 50 / 0 to 12 dB 2 1 kHz
..........Max Input (Mic/Line) +10 / +22 dBu   min gain, 1 kHz
..........Max Input (Mic/Line) -28 / +10 dBu   max gain, 1 kHz
..........Frequency Response 10 Hz-50 kHz   mic gain = 50 dB; +.5,-3 dB
..........Equivalent Input Noise -126 dBu max mic gain = 50 dB, Rs=150Ω 20-20 kHz
..........Common Mode Rejection 60 dB min 1 kHz, Rs = 150Ω
..........THD+N 0.01% typ mic gain = 40 dB, +4 dBu, 20-20 kHz
..........Phantom Power 15 VDC 5% disabled in line mode
Tone Controls: Type Accelerated-Slope   2nd-order Linkwitz-Riley
..........Boost/Cut Range +6 dB to full cut (off)    
..........Lo/Mid and Mid/High 300 Hz / 4 kHz 5% Separation frequencies
Effects Loop: Type Active unbalanced   1/4" TS connector
..........Input Impedance 30.1k Ω min 1 kHz
..........Output Impedance 300 Ω 1% 1 kHz
..........Maximum Output +20 dBu min load = 10 kΩ, 1 kHz
A/B unbalanced outputs: Active unbalanced; Mono RCA connectors; (same as A & B)
..........Output Impedance 300 Ω 1% 1 kHz
..........Maximum Output +20 dBu min load = 10 kΩ, 1 kHz
Balanced Outputs: Type Active balanced   1/4 TRS and XLR connectors
..........Output Imped. (Mic/Line) 51.1 / 150 Ω 1% 1 kHz
..........Max. Output (Mic/Line) -16 / +24 dBu min load = 10 kΩ, 1 kHz
..........SN 90 dB typ 20-20 kHz, 1 Line Input, unity, +4 dBu
..........THD+N .0035 % typ 20-20 kHz, +4 dBu, Line Input, unity
..........Control Feed-through -80 dB typ all front panel level controls @ 1 kHz
Crosstalk -75 dB @ 1 kHz max re +4 dBu, any channel to any channel
Unit: Agency Listing UL/cUL/CE    
Universal Line Voltage 100-240 VAC, 50/60 Hz   7 watts
Unit: Construction All Steel    
..........Size (1U) 1.75"H x 19"W x 5.3"D (4.4 cm x 48.3 cm x 13.3 cm)
..........Weight 4 lb   (1.8 kg)
Shipping: Size 4.25 x 20.3 x 13.75 (11 cm x 52 cm x 35 cm)
..........Weight 8 lb   (3.6 kg)
Note: 0 dBu=0.775 Vrms

MLM42S Literature

Each unit is shipped with a booklet containing all of the above, the RaneNote "Sound System Interconnection," Declaration of Conformity, and Rane's 2+ Year Warranty information.

MLM42S Support

If the above options don't answer your question, or it's urgent...
Phone 425-355-6000, 8:30 AM to 5 PM PST, Monday through Friday.
If it's less urgent, you can email the factory.
For local service within the USA, find a service center.

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