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Rolls MX122 MiniMix Pro Mic/Source Mixer

BH #ROMX122 • MFR #MX122
9 reviews
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Rolls MX122 MiniMix Pro Mic/Source Mixer
Key Features
  • Mixer for Vocals & Line-Level Sources
  • XLR Mic Input on Channel 1
  • Microphone Trim on Channel 1
  • 12 VDC Phantom Power via Jumper
The Rolls MX122 MiniMix Pro is a compact and reliable five-channel audio mixer. It's suitable for musicians who need to mix stereo keyboards, sound modules, and other line-level sources with a single microphone. 
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Rolls MX122 Overview

The Rolls MX122 MiniMix Pro is a compact and reliable five-channel audio mixer. It's suitable for musicians who need to mix stereo keyboards, sound modules, and other line-level sources with a single microphone. 

Channel 1 is a dedicated microphone input with a 3-pin XLR connector and a mic trim pot. Channels 2 through 5 feature 1/4" inputs divided into stereo pairs, though they can also accept mono signals.

Two 1/4" outputs are provided on the rear panel for stereo connections, but you can also monitor with headphones using the front panel jacks. For this purpose, a 1/4" and a 3.5mm output are supplied. Master output knobs are supplied for overall level and phone/aux level. With this mixer, you can combine a microphone signal with four stereo or mono signals, with level and pan controls over each channel. A power supply is included.

Microphone Input
Channel 1 features a XLR microphone input with 12VDC phantom power, selectable via the phantom power jumper on the rear of the unit.
Stereo Line Inputs
Channels 2 through 5 utilize stereo 1/4" phone inputs, and the right input is used for mono signals.
Flexible Outputs
The main outputs are featured on stereo 1/4" phone connections. Dual headphone outputs feature 1/4" phone and 3.5mm stereo connections for monitoring. The secondary headphone output may be used as an auxiliary stereo output with level control.
Level and Pan Controls
All input channels feature level and pan controls (stereo controls for 1/4" input sections).
UPC: 675889012200

Rolls MX122 Specs

Input Impedance
Line: 10 kOhms, unbalanced
Mic: 10 kOhms, balanced
Output Impedance
50 Ohms, balanced
Max Input
Line: +24 dBV
Microphone: -8 dBV
Phase Shift
< 10°, 20 Hz to 20 kHz
Connectors
8 x 1/4" TS inputs, phone type
1 x XLR input
3 x 1/4" TRS outputs, phone type
1 x 1/8" / 3.5 mm headphone output
Max Gain
Line: 26 dB
Aux: 26 dB
Mic: 80 dB
CMMR
Mic: 95 dB
Phantom Power
+12 VDC
Signal-to-Noise Ratio
> 90 dB
Total Harmonic Distortion (THD)
< 0.004%
Power Requirements
12 VDC External Power Supply
Dimensions
8.4" x 1.7" x 5" / 21.3 x 4.3 x 13 cm
Weight
2.5 lb / 1.1 kg
Packaging Info
Package Weight
2.73 lb
Box Dimensions (LxWxH)
14 x 9.15 x 4"

Rolls MX122 Reviews

Nice problem solver

By Robert
Rated 4 out of 5
Date: 2026-08-09

A little workhorse that does exactly what it says. I am not expert enough to comment on nor test any added distortion or noise floor increase but it seems fine for my purposes. Just note there is no power switch, so you must do one of the following: live with a LED always on, add a switched PSU, or be ready to chase a barrel plug falling behind your work area. I also agree with other reviews that the lack of a center detent in the pan is annoying, but as I don't need to mess with pan at this point in my chain its not a big deal once I get it centered and forget about it.

Compact Powerful Portability !

By Michael
Rated 5 out of 5
Date: 2022-02-03

I am a Professional Session/Touring drummer here in Nashville for the past 15 years. I have had a compact IEM Rig for easy use in multiple situations. Since the standardization of the Sample Pad and Mixing Apps for your phone/tablet, I needed to make a more compact rig to do more. The Rolls MX122 was the perfect solution for me and my situation. It handles a monitor feed for the Mix Apps, a stereo connection for the sample pad, feed for my iPad, feed for my iPhone, and a feed for my metronome. It may seem like overkill with all the different devices, but with the multiple Artist schedule, last minute notices I sometimes get, I have every resource at my fingertips for reference and charts. All on one stand. Thank you Rolls for saving space for me in my space. This Mixer sounds fantastic and is the only answer for powerful portability.

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