Yamaha MG12X CV 12 Channel Stereo Mixer - With Effects

12 inputs, studio-grade preamps, road-ready steel

MG12X CV

Sale good through September 02, 2026 or while supplies last

$404.99

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The Yamaha MG12X CV is a compact 12-input analog mixer housed in a rugged, powder-coated steel chassis — built to survive load-ins, rehearsal rooms and permanent installs alike. At its heart are Yamaha's D-PRE discrete Class-A microphone preamplifiers, delivering detailed, natural sound from vocal mics, instrument mics and line sources.

Connectivity is genuinely flexible. The MG12X CV accepts XLR, 1/4" phone and RCA-type pin jack inputs, and offers XLR and phone outputs along with a balanced stereo output. Two AUX busses handle the job: one feeds the built-in SPX digital effects processor with its 24 programs, the other sends to monitors. A footswitch input lets you mute effects hands-free between songs or spoken segments.

Four channels of Yamaha's one-knob compression let you control vocals, bass or drums without diving into threshold and ratio menus. Mono channels add three-band EQ, an 80Hz high-pass filter, a 26dB pad and a peak LED, while dual 12-segment output meters keep you on top of levels. Faders and lit channel on/off switches make your settings readable at a glance, and color-coded controls keep operation intuitive under stage lighting.

Switchable +48V phantom power covers condenser mics, a universal AC 100-240V supply handles travel, and at 9.3 lb the MG12X CV is easy to carry. For fixed installations, it can be rackmounted using the optional RK-MG12 rackmount kit.

  • 12-input analog mixer with balanced stereo output
  • D-PRE discrete Class-A mic preamps
  • Built-in SPX digital effects with 24 programs
  • Four channels of one-knob compression
  • Switchable +48V phantom power
  • Rugged powder-coated steel chassis
  • Footswitch input for hands-free effect muting
  • 9.3 lb. — rackmountable with optional RK-MG12 kit

Included in the package are:

Yamaha MG12X CV 12 Channel Stereo Mixer - With Effects

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$404.99

Clean, Natural Mic Sound

D-PRE discrete Class-A microphone preamplifiers give vocals and acoustic sources a detailed, pristine character. It's the kind of front end that makes a small mixer punch above its size.

Built For The Road

The powder-coated steel chassis is made to take the knocks of regular load-ins and tear-downs. At 9.3 lb it's still light enough to carry to the gig without a second trip.

Effortless Level Control

Four channels of one-knob compression let you tame vocals, bass or drums with a single turn — no wrestling with threshold and ratio settings mid-soundcheck. Color-coded controls and lit channel on/off switches keep your settings obvious at a glance.

Housed in a rugged steel chassis, the MG12X CV can accommodate up to 12 inputs and offers a balanced stereo output. Featuring D-Pre discrete Class-A microphone preamplifiers for pristine sound, it includes AUX busses for the built-in SPX effect with 24 presets and another for monitoring. Four channels of single-knob compression are available. The MG12X can accept XLR, 1/4” phone and RCA-type pin jack inputs, and offers XLR and phone outputs. The MG12X offers faders, and lit channel on/off switches for easy visual indication of settings. A footswitch input allows hands-free effect muting. The MG12X CV can be rackmounted with the optional RK-MG12 rackmount kit.

FEATURES

  • Rugged, powder-coated steel chassis for superior durability
  • Discrete Class-A microphone preamps
  • Built-in SPX digital effects with 24 programs
  • Switchable +48V phantom power
  • Color-coded controls offer easy operation

SPECIFICATIONS

General

  • Frequency response input to STEREO OUT: +0.5dB/-1.5dB (20Hz to 48kHz), refer to the nominal output level @ 1kHz, GAIN knob set to min
  • Total Harmonic Distortion (THD+N) input to STEREO OUT: 0.03 % @ +14dBu (20Hz to 20kHz), GAIN knob set to min
  • Crosstalk (1kHz): -78dB
  • Hum and Noise (20Hz to 20kHz)
  • Equivalent Input Noise: Crosstalk (1kHz)
  • Residual Input Noise: -102dBu (STEREO OUT, STEREO master fader set to min)

Input Channels

  • Mono [MIC/LINE]: 4
  • Mono/Stereo [MIC/LINE]: 2
  • Stereo [LINE]: 2

Output Channels

  • STEREO OUT: 2
  • MONITOR OUT: 1
  • PHONES: 1
  • AUX SEND: 2
  • GROUP OUT: 2

Bus

  • STEREO: 1
  • GROUP: 2
  • AUX SEND: 2 (incl. FX)

Input Channel Function

  • Pad (mono): 26dB
  • HPF (mono, mono/stereo): 80Hz, 12dB/oct (mono/stereo: MIC only)
  • COMP (Mono)
  • 1-knob compressor (mono) (Gain/Threshold/Ratio) threshold: +22dBu to -8dBu
  • Ratio: 1:1 to 4:1
  • Output level: 0dB to 7dB
  • Attack time: Approx. 25 msec
  • Release time: Approx. 300 msec
  • EQ
  • High: Gain: +15dB/-15dB, frequency: 10kHz shelving
  • Mid: Gain: +15dB/-15dB, frequency: 2.5kHz peaking
  • Low: Gain: +15dB/-15dB, frequency: 100Hz shelving
  • Peak LED (mono)
  • LED turns on when post-EQ signal reaches 3dB below clipping

Power

  • Phantom power voltage: +48V
  • Power requirements: AC 100–240V, 50/60Hz
  • Power consumption: 22W

Other

  • Pre-monitor level meter: 2 x 12 segment LED meter [PEAK, +10, +6, +3, 0, -3, -6, -10, -15, -20, -25, -30dB]
  • SPX algorithm: 24 programs
  • Dimensions (WxHxD): 12.1" x 4.6" x 16.6"
  • Net weight: 9.3 lb.

12 Inputs, Flexible I/O

Handles up to 12 inputs via XLR, 1/4" phone and RCA-type pin jacks, with XLR and phone outputs plus a balanced stereo output. The channel count breaks down as four mono mic/line, two mono/stereo mic/line and two stereo line.

Built-In SPX Effects

An onboard SPX digital effects processor offers 24 programs fed by its own AUX bus. A footswitch input lets you mute effects hands-free.

One-Knob Compression

Four mono channels feature Yamaha's single-knob compressor, spanning +22dBu to -8dBu threshold and 1:1 to 4:1 ratio with roughly 25 msec attack and 300 msec release.

Three-Band EQ

Each channel offers ±15dB of 10kHz high shelving, 2.5kHz mid peaking and 100Hz low shelving EQ. An 80Hz 12dB/oct high-pass filter cleans up rumble on mono and mono/stereo mic channels.

+48V Phantom Power

Switchable +48V phantom power runs condenser microphones without an external supply. The universal AC 100-240V, 50/60Hz power section draws just 22W.

Two AUX Busses

One AUX bus drives the internal SPX effects while the second handles monitor sends. Two group busses and a stereo bus round out the routing.

Frequently Asked Questions

Specs & Support

• Frequency Response (input to STEREO OUT): +0.5dB/-1.5dB (20Hz to 48kHz), referenced to nominal output level @ 1kHz, GAIN at min

• Total Harmonic Distortion (THD+N, input to STEREO OUT): 0.03% @ +14dBu (20Hz to 20kHz), GAIN at min

• Crosstalk (1kHz): -78dB

• Residual Input Noise: -102dBu (STEREO OUT, STEREO master fader at min)

• Mono Input Channels [MIC/LINE]: 4

• Mono/Stereo Input Channels [MIC/LINE]: 2

• Stereo Input Channels [LINE]: 2

• STEREO OUT: 2

• MONITOR OUT: 1

• PHONES: 1

• AUX SEND: 2

• GROUP OUT: 2

• Bus - STEREO: 1

• Bus - GROUP: 2

• Bus - AUX SEND: 2 (incl. FX)

• Pad (mono): 26dB

• HPF (mono, mono/stereo): 80Hz, 12dB/oct (mono/stereo: MIC only)

• 1-Knob Compressor Threshold (mono): +22dBu to -8dBu

• Compressor Ratio: 1:1 to 4:1

• Compressor Output Level: 0dB to 7dB

• Compressor Attack Time: Approx. 25 msec

• Compressor Release Time: Approx. 300 msec

• EQ High: +15dB/-15dB, 10kHz shelving

• EQ Mid: +15dB/-15dB, 2.5kHz peaking

• EQ Low: +15dB/-15dB, 100Hz shelving

• Peak LED (mono): Lights when post-EQ signal reaches 3dB below clipping

• Phantom Power Voltage: +48V

• Power Requirements: AC 100-240V, 50/60Hz

• Power Consumption: 22W

• Metering: 2 x 12-segment LED meters (PEAK, +10, +6, +3, 0, -3, -6, -10, -15, -20, -25, -30dB)

• SPX Algorithm: 24 programs

• Dimensions (WxHxD): 12.1" (30.8 cm) x 4.6" (11.8 cm) x 16.6" (42.2 cm)

• Weight: 9.3 lb. (4.2 kg)

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