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Fender Mustang GT40


Fender® Mustang GT 40 is the world’s first WiFi-equipped amplifier. Users can access Fender artist-created presets, download the latest firmware updates and connect directly with a community of players to share their own presets, playing tips and more. Stream stereo music wirelessly from any Bluetooth device, or customize a preset from across the room with an iOS or Android smartphone, using the Tone app.


Presets: Mustang GT includes both genre-specific and artist-specific presets—created by the artists themselves. No other manufacturer has Fender’s access to inspiring artists across such a wide variety of genres, from R&B to metal to pop to jazz.

Upgraded modeling: New models and effects with even more realism, increased signal path flexibility, more realistic response, “setlist” support and effects spillover when changing presets—we’ve updated everything about our digital modeling.

Tone App The free, exclusive Fender Tone app uses an intuitive interface to access a virtually endless number of presets, add one-touch control and remote editing to the Mustang GT’s power and connect to Fender Digital for learning, demoing and sharing presets.

User Interface: The crystal-clear, LCD color display makes it easy to see amp and effect settings at a glance. Add to that the large encoder dial and three soft-touch keys and you have a powerful, intuitive interface that makes it easy to create your soun

The optional MGT-4 4-button footswitch unlocks the GT 40’s powerful onboard looping capabilities—with up to 60 seconds of record time. The looper can be used as a creative tool to create lush, multi-layered soundscapes, as a practice companion to hear scales and chords in context or as a writing partner to work out ideas on the fly.

We recommend running a firmware update on your amp when you first purchase it, as a newer version may have become available between the time the amp was manufactured and the time you purchased it. It's also a good idea to check for available firmware updates, if at any time you experience an issue with the amp that may be fixed in the latest version.

Please watch our How to Update Your Firmware video, or follow the instructions below:


  • Voltage 120V  
  • Wattage 40 Watts (2 x 20 in Stereo) 
  • Controls Gain, Volume, Treble, Bass, Master, Encoder, Three Layer Buttons, FX Button, Save Button, Menu Button, Tap Button  
  • Channels One Inputs One - 1/4" 
  •  Effects 21 Amp Models, 
  • 46 Effects 
  • Line Out One - (1/8" Stereo)

  • Cabinet Material 5/8" particleboard  
  • Amplifier Covering Black Textured Vinyl 
  • Grille Cloth Black  
  • Front Panel Black 
  • Handle Integrated Top-Mount Handle

  • Speakers Two - 6.5" Speakers  
  • Total Impedance 8 ohms

  • Amp Height 10.5" (26.7cm)  
  • Amp Width 15.25" (38.73 cm) 
  • Amp Length 8.25" (21.0 cm)  
  • Amp Weight 14 lbs. (6.25 kg)

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Fender®, Squier® Stratocaster®, Telecaster®, Precision Bass®, Jazz Bass® and the distinctive headstock designs commonly found on the Strat®, Tele® & P Bass® guitars are registered trademarks of Fender Musical Instruments Corporation.