MLM103 Mic/Line Mixer

MLM103 Mixer

MLM103 Mixer


Six Studio-grade Mic Preamplifier Inputs

  • Mic or Line-level Operation
  • +12 volt Phantom Power
  • Continuously Variable Gain Trim
  • Direct Outputs (pre- or post- mix level)
  • A/B/AUX Assign Switches
  • Input Overload Indicator
  • EQ & Assign Switch Security Cover Included

Two Balanced Stereo Line-level Inputs

  • Mono Switch
  • A/B/AUX Assign Switch
  • Input Overload Indicator

A / B / AUX Balanced Outputs with Peak Hold Meters

  • Independent Level Controls

This product has not been tested to the current CE requirements and is not available in markets requiring CE compliance.

MLM103 Mic/Line Mixer


The Rane MLM103 Mic/Line Mixer features six balanced, studio-grade microphone inputs and two balanced, stereo line-level inputs. The microphone preamplifiers include direct outputs. These can monitor the signal ‘pre’ or ‘post’ the mix Level control via rear panel switches. Each microphone and stereo line input features three-band EQ and mix level controls. Input overload indicators are peak detecting and illuminate 4 dB before clipping. Three balanced outputs are provided. A and B outputs may be used as a stereo pair in a single zone or as two independent mono zones. The AUX output is mono. All connections are via Euroblock connectors.

MLM103 Block

Inputs 1 through 6 may be individually switched between Mic or Line level via rear panel switches. Inputs operate in Mic mode with a gain range of +12 dB to 60 dB. Each pair of Inputs may operate with or without 12 volt phantom power via rear panel switches. When Inputs are operated in Line mode, the gain range is -4 to 12 dB. When Line mode is selected, phantom power is defeated. Each Input may be assigned to the A, B or AUX Output.
Stereo Line Inputs 7 through 10 accommodate +24 dBu signal levels. The gain range is –∞ to +12 dB. The A/B Assign switch for Inputs 7/8 assigns 7 to Output A and 8 to Output B. The A/B Assign switch for Inputs 9/10 assigns 9 to Output A and 10 to Output B. The Mono switch sends the sum of Inputs 7 and 8 (or 9 and 10) to bus A and bus B. Assigning 7/8 or 9/10 to AUX sends the sum of Input 7 and 8 (or 9 and 10) to the AUX Output.


The A, B and AUX Outputs feature independent level controls and 10 segment meters with peak hold. Each balanced Output provides an additional 6 dB of gain and delivers a minimum signal level of +24 dBu into a 10 kΩ load.

The MLM103 features a built-in high efficiency, universal voltage power supply that can operate in almost any country in the world. A security cover for the EQ and Assign switches is included with the unit.

MLM103 with included security cover

Application: Small House of Worship

MLM103 for House of Worship

The MLM103 can deliver a stereo mix to the Main Sanctuary, or if a three rooms if they only need a mono mix. The mic direct outputs may be used with other mixers for a sermon-only recording, or stage monitor for the keyboardist.

Application: Meeting Room Combine

MLM103 for Room Combine

The MLM103's Assign buttons can send each mic to A. B, and AUX independently. Whichever room a mic jack is located in, its mic can be heard in any or all rooms. Mics may be wired from a breakout box or a pair of mic jacks on the wall in each room. Stereo sources are switched to mono. The mic direct outputs may be used for additional un-switchable zones.

MLM103 Specifications

Parameter Specification Limit Conditions/Comments
Mic Inputs: Type Active balanced  
...Connectors Euroblock   Accepts 12-24 AWG wire
...Input Impedance Mic Mode 1.49 kΩ 1% 745 Ω each leg, 1 kHz
...Input Impedance Line Mode 8 kΩ 1% 4 kΩ each leg, 1 kHz
...Gain Range Mic Mode 12 to 60 dB 2 Min/max, 1 kHz
...Max Input Mic Mode +8 / -40 dBu   Min/max gain, 1 kHz
...Gain Range Line Mode -4 / +12 dB 1 Min/max, 1 kHz
...Max Input Line Mode +24 / +8 dBu   Min/max gain, 1 kHz
...Freq. Response 50 Hz-50 kHz   Mic gain=60 dB; +.5, -3 dB
  10 Hz-50 kHz   Mic gain=12 dB; +.5, -3 dB
...Equivalent Input Noise -127 dBu typ Mic gain 60 dB, Rs=150Ω 20Hz-20kHz
...Common Mode Rejection 60 dB min 1 kHz, Rs=150 Ω, gain=60 dB
...THD+N 0.01 % typ Mic gain=40 dB, +4 dBu, 20 Hz-20 kHz
...Phantom Power 12 VDC 5% Disabled in Line mode
Stereo Line Inputs Active balanced Euroblock
...Input Impedance 10 kΩ 1% Each leg, common mode or differential
...Gain Range -infinity to +12 dB typical @ 1 kHz
...Maximum Input +24 / +12 dBu   Min/max gain, 1 kHz
...Freq. Response 10 Hz-50 kHz   +.5, -3 dB
...Common Mode Rejection 40 dB min 1 kHz, Rs=150Ω
...THD+N 0.005 % typ 20 Hz-20 kHz, +4 dBu, Load=10 kΩ
Tone Controls: Type Baxandall   2-stage, bass and treble shelving
...Boost/Cut ±12 Range dB typ All filters
...Low ±6 dB typ Boost/cut at 300 Hz
...Mid ±6 dB typ Boost/cut at 300 Hz & 3.3 kHz,
center 1 kHz
...High ±6 dB typ Boost/cut at 3.3 kHz
Outputs: Type Active balanced  
...Connector Euroblock   Accepts 12-24 AWG wire
...Output Impedance 200 Ω 1% 100 Ω each leg, 1 kHz
...Maximum Output +24 dBu min Load=10 kΩ, 1 kHz
...Noise Floor -100 dB typ No inputs assigned
  -89 dB typ Any line-level input assigned, output levels max, 20 Hz to 20 kHz, re +4 dBu
...Crosstalk -80 dB max Any input to any output @ 1 kHz
...Control Feed-through -80 dB max All front panel assign and level controls
Meters: Type Average dBu    
...Range -20 to +10 dBu    
...Segments 10    
...Peak Hold 1 sec    
Power Requirement 100 - 240 VAC   50/60 Hz, 20 watts
Unit: Agency Listing c/CSA/us   247105
...Construction All Steel    
...Size (3U) 5.25"H x 19"W x 5.3"D (13.3 cm x 48.3 cm x 13.5 cm)
...Weight 9 lb   (4.1 kg)
Shipping: Size 11 x 23 x 16   (27.9 cm x 58.4 cm x 40.6 cm)
...Weight 13 lb   (5.9 kg)
Note: 0 dBu=0.775 Vrms

MLM103 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.

MLM103 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.

Other Rane Rack Mixers

AM1 Automixer, 4 Mic / Line In, 2 Aux In, USB Audio I/O, Headphone Amp, Cascadable, RAD Port 1 XLR XLR, USB,
RCA RCA, 3.5 mm, RJ-45
AM2 Automixer, 8 Mic / Line In, Cascadable, RAD Port 1 XLR XLR, RJ-45
MLM42S Mixer, 4 Mic / Line In, EQ, Effects Loop, 2 Out 1 XLR XLR,
1/4" 1/4" TRS
MLM65 Mixer, 6 Mic / Line In, 6 Stereo Line In, USB Audio I/O 3 XLR XLR,
MLM82S Mixer, 4 Mic / Line In, 4 Mono / Stereo In, 2 Out 1 XLR XLR,
1/4" 1/4" TRS
SM26S 6 In x 2 Out Line Mixer, 2 In x 6 Out Line Splitter 1 1/4" 1/4" TRS
SM82S Mixer, 8 Stereo Line Inputs With Aux Sends 1 1/4" 1/4" TS1/4" 1/4" TRS