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Boss MS-3 Multi Effects Switcher

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The MS-3 Multi Effects Switcher is a new-concept pedalboard solution that maximizes your creative options by combining a world-class multi-effects en...Click To Read More About This Product

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Pedalboard integration evolved.

The MS-3 Multi Effects Switcher is a new-concept pedalboard solution that maximizes your creative options by combining a world-class multi-effects engine and multi-pedal switcher in one small, dedicated unit. Now, anyone can put together a professional effects system that’s incredibly compact, extremely light, and versatile enough to achieve nearly any sound imaginable. The MS-3 is a sonic powerhouse capable of running six internal pedal effects at once while seamlessly integrating three of your favorite external pedals. It also offers deep rig control capabilities, allowing you to switch amp channels, adjust effects in real time, work with MIDI devices, and more. With the MS-3, it’s easy to create a portable board or fly rig without the compromises associated with traditional loop switchers and allin-one multi-effects units.

As Versatile As You Need to Be
The MS-3’s highly flexible design gives you the freedom to create any kind of effects system, from simple to complex. It can serve as a general-purpose effects unit to augment core tone from three stompboxes, or function as the central hub of an advanced hybrid rig with MIDI gear and channel-switching amps. It even works as a standalone effects processor, making it perfect for fly dates and other times you need to travel light. And if you’re just starting out, the MS-3 provides a solid effects foundation that can be expanded as your experience grows.

Three Loops for Your Choice of Effects
Via the MS-3’s audio loops, you can connect three different effects devices to the system. You’ll probably want to hook up your favorite drive and booster pedals to the loops, but you can use any effects you like. Once your pedals are connected, you’re able to switch the loops on/off individually, and position the MS-3’s onboard effects around them any way you want.

World-Class BOSS Effects Engine
To complement the three external loops, the MS-3 is equipped 112 effects types to choose from. They’re organized in six categories, which are available simultaneously: FX1, FX2, Mod1, Mod2, Delay, and Reverb. FX1 and FX2 contain many different types, from overdrives and distortions to compressors, pitch shifters, Slow Gear, and many others. Mod1 and Mod2 offer the famous BOSS chorus and vibrato effects, plus tremolo, flanger, phaser, and more. All the effects are fantastic for guitar, and there’s also a large selection specially optimized for bass.

Big Creativity in a Tiny Package
The MS-3 is packed with decades of BOSS compact pedal and multi-effects know-how, and offers an ultraefficient design that lets you dial in inspiring sounds right away. There’s a backlit LCD that clearly shows patch/bank numbers and parameters, plus quick-access knobs for editing and status indicators for all loops and effects. And with 200 patch locations, you have ample memory for storing effects and control setups for instant recall.

Complete Foot Control
The MS-3’s heavy-duty footswitches give you easy command of the entire system. In Memory mode, the footswitches allow you to select patches and banks. Changing to Manual mode lets you switch loops and effects on/off, and even control multiple effects parameters for intense real-time expression. Your Manual mode assignments can be stored in patches, letting you create dynamic custom setups for different songs and styles.

Pro Essentials
Going well beyond the basics, the MS-3 provides tons of options for expanded control. You’re able to connect external footswitches for tap tempo, effects on/off, and parameter adjustment, plus expression pedals for volume, wah, pitch shift, and more. Control out jacks are available for switching amp channels and controlling effects that support external input. And there’s even MIDI for sending tempo, PC, and CC information to MIDIenabled pedals, whether they’re connected to loops or not. In addition, the MS-3’s two audio outputs can be set for full stereo or selectable mono operation per patch, providing great flexibility with dual amp rigs.

USB and Remote Editing
The MS-3 supports USB for accessing the free MS-3 Editor/Librarian software on a Mac or Windows computer. This lets you edit effects, assign control parameters, set tempos, and more via a convenient graphic interface. You can also back up and restore individual patches, and organize groups of patches into Live Sets for various gigs

  • Powerful integrated solution for creating a compact professional pedalboard
  • Unlimited sound creation with six simultaneous pedal effects and audio loops for connecting three external pedals
  • 112 built-in effects types for guitar and bass, including delays, reverbs, mod/pitch effects, overdrives, distortions, and more
  • Intuitive user interface for easy patch creation
  • Backlit LCD, editing knobs, and panel LEDs for on/off status of loops and effects
  • Control assign, wave pedal, and other functions for deep real-time expression
  • Equipped with numerous jacks for amp channel switching, effects control, and more
  • MIDI output for working with MIDI-enabled effects
  • Built-in tuner, noise suppressor, and global EQ
  • USB for patch creation and backup via free MS-3 Editor/Librarian software

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Review Snapshot

by PowerReviews
BossMS-3 Multi Effects Switcher

(based on 2 reviews)

Ratings Distribution

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Reviewed by 2 customers

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(1 of 1 customers found this review helpful)


Perfect Solution!

By CodyClari

from Lincoln, NE

About Me Experienced

See all my reviews

Verified Reviewer


  • Compact Design
  • Excellent Sound Quality
  • Good Selection Of Effects
  • Responsive
  • Versatile


    Best Uses

      Comments about Boss MS-3 Multi Effects Switcher:

      I was looking to downsize my pedalboard a bit and decided to go with the pedaltrain classic 1. Then the MS-3 came out and it was just what I need. I use the midi to control my empress reverb because of all the effects, I think the reverb is lacking just a bit compared to the empress. This was my first venture into midi and it is really quite easy with the MS-3. The modulation and delay are top notch and work just fine for my uses. I also use the mini Dunlop volume/expression pedal which gives even more functionality. I love how you can make patches and also go into those patches on the fly and add or take out effects. All in all, I think this product has lived up to the hype in my mind and I feel like I downsized the size of my rig, but also upped the amount I can do with it. In my three loops I have the boss bd-2, boss ds-2, and a big Mff tone wicker pedal, looking to hopefully switch one of the boss pedals out for a wampler tumnus...or something else...we shall see. If you have any questions about this product, feel free to ask me!

      (1 of 1 customers found this review helpful)


      Great Device

      By MJ Slaughter

      from McKinney, TX

      See all my reviews

      Verified Buyer

      Comments about Boss MS-3 Multi Effects Switcher:

      I am a long time Boss MFX user, GT-10, GT-100 and now the MS-3. Since the GT-10 was released I've used MFX boards live with tube amps using the 4CM and most recently with amp modelers. With the 3 FX loops and much improved MIDI features the MS-3 is a lot more than just a well built mid tier MFX board. If you're coming from the GT-100 to the MS-3 there are some adjustments which are obvious, screens, less switches and no built in pedal but with the increased functionality I find it well worth it.

      Still testing it to make sure I can do what I need to in a live setting but so far I'm finding it does great and a much smaller foot print even with an external expression pedal. The MIDI out can now map to different PC#s, send on different channels per patch, send multiple CC#s. When using other MIDI devices like I do this is a very welcomed addition. My plan was to use the MS-3 with my amp modeling rig and keep the GT-100 for the tube amps but at this point I feel like the GT will be spending some time boxed up in the closet. Still in the honeymoon period but so far I'm very happy with it.

      Another benefit is that the power requirements are much less and I have been able to run this off one 2 amp power supply with my other pedals.

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