The amp can be operated in either a Manual or Preset mode. In Manual mode, the amp's settings always match the physical positions of the knobs, while in Preset mode, the position of all controls except the Master Volume is stored within each channel, and the physical position of the knobs will not match the settings of the amplifier. This means you can set up four distinct amp characters ahead of time and switch among them during the gig with an optional footswitch.

The five effects include Chorus, Phaser, Flanger, Delay (with tap-tempo), and Octave, while the dedicated reverb offers digital simulations of studio verbs or spring tanks. The tone of all four channels can be adjusted with the three-knob EQ section and stored within the channel's memory for instant recall at a later time. Indeed, each preset is stored with EQ, effects, and reverb settings.

Additional features include a master volume control, a headphone output for silent practicing, an MP3 / line in to jam along with your favorite tunes, and a Store button to easily save presets. The MG15GFX is compatible with the optional PEDL-90008 footswitch and ships with a standard IEC power cord. The optional PEDL-90008 has an onboard tuner and each footswitch can be assigned to a different stored function. On a purely cosmetic level, the gold plating on the control panel and gold trimming lining the speaker lends the amplifier a distinctive look.

Key Features at a Glance
15W output
Single 8" speaker
Four Preset Channels
Clean
Crunch
OD-1
OD-2
Equalization
Treble
Middle
Bass
Effects
Chorus
Phaser
Flanger
Delay (with tap-tempo)
Octave
Reverb
Studio
Spring

All EQ, effects, and reverb settings are stored within each of the four preset channels
3.5mm MP3 / line in for auxiliary sound sources
3.5mm headphone output (mutes speaker for silent practice sessions)
Manual or Preset operation modes
Store button to easily save presets
Compatible with optional PEDL-90008 footswitch
When using the optional footswitch, holding both the Tap switch and the Store switch will activate the tuner

Marshall Amplification MG15GFX Specs
Amplifier Section
Amplifier Type Solid-State
Output Power 15 W RMS
Channels 4
Master Volume Yes
Tone Section Bass, Channel Volume, Mid, Treble
Built-In Effects Chorus, Delay, Digital Reverb, Flanger, Octave, Phaser
Presets & Storage User Presets: 4
Inputs 1 x 1/4" Mono Instrument
1 x 1/8" Stereo Line Level
1 x 1/4" Stereo Footswitch
Outputs 1 x 1/8" Stereo Headphone
Output Impedance 8 Ohms Mono
Speaker Section
Configuration 1 x 8" Speaker
Power Rating 15 W
Cabinet Type Straight Closed Mono
Input Impedance 8 Ohms Mono
Dimensions (WxHxD) 18.9 x 16.5 x 8.9" / 480.0 x 420.0 x 225.0 mm Combo
Weight 23.81 lb / 10.8 kg Combo