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DESCRIPTION

FRONT PANEL

R            L

MASTER

LEVEL

PHONE/AUX

LEVEL

PHONE/AUX

OUTPUTS

pwr

LEVEL

LEVEL

LEVEL

LEVEL

MIC LEVEL

PAN

R            L

BAL

R            L

BAL

R            L

BAL

R            L

BAL

Channel One

Mic Level: Adjusts the signal level of the microphone preamp circuitry.

Pan: Adjusts the relative level of the microphone signal to the Right and Left 

Outputs.

Note: Channels Two through Five are identical.

Channel Two - Five Section

Level: Adjusts the overall signal level of the channel.

Bal: Adjusts the relative level of the channel signal to the Right and Left outputs.

Master Level : Controls the overall output level of the MX122.

Phone/Aux Level: Adjusts the output level of the Phone/Aux Outputs.

Phone/Aux Outputs: 1/4”  and 1/8” (3.5mm) TRS stereo jacks for monitoring the 

master right and left signals, also may be used as an alternative stereo output for 

connecting to another stereo ampli  er.

PWR: Indicates that the MX122 is connected to an AC outlet and is on.

REAR PANEL

12 VDC: Connects to the included Rolls PS27 12 VDC power supply.

Master Outputs

Right and Left Out: 1/4” TRS balanced main output jacks. For connection to an 

ampli  er, recording device or signal processor.

Channel Inputs

Note: Channels Two through Five are identical.

Right / Left: 1/4” TS unbalanced jacks for connection to the right and left outputs 

of a stereo instrument. If a mono signal is being sent,use the Right input, for a 

Tip-Ring-Sleeve stereo signal, use the Left input.

Mic Input Channel 1: Balanced XLR jack for connection to a condenser or dy-

namic microphone.

Phantom Power: Jumper connector for ap12V phantom power to the Mic 

XLR Input jack.

Mic Trim: Adjusts the initial gain of the Mic preamp circuitry.

INTRODUCTION

Thank your for your purchase of the Rolls MX122 MiniMix Pro Mixer. The MX122 

is a line-level mixer featuring a single mic input and four channels of stereo 

inputs.  

INSPECTION

1. Unpack and inspect the MX122 box and package.

Your MX122 was carefully packed at the factory in a protective carton. None-

theless, be sure to examine the unit and the carton for any signs of damage 

that may have occurred during shipping. If obvious physical damage is noticed, 

contact the carrier immediately to make a damage claim. We suggest saving 

the shipping carton and packing materials for safely transporting the unit in the 

future.

2. Please visit our website at 

www.rolls.com

 and click on the 

Register Warran-

ty Here

 text, then   ll out the Warranty Registration info to register your MX122. 

FEATURES

• 1 XLR balanced Mic Input with rear panel Trim control

• +12VDC Phantom Power

• 4 individual 1/4” Stereo Inputs

• Balanced 1/4” TRS Outputs

• Balance control on each channel (Pan on the Mic channel)

• Headphone / Auxiliary Outputs

• External Power Supply included for low noise operation

1

SCHEMATIC

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