Exemplifying the excellence of BOSS’s ME series at its very best, the ME-90B is an all-in-one bass processor armed with a plethora of studio-grade sounds and effects. This comprehensive multi-effects powerhouse starts with 10 AIRD Preamps and an IR loader to build your base tone, along with 61 superlative effects optimized for low-end performance. In classic ME-series fashion, the ME-90B’s sports eight color-coded footswitches and an onboard expression pedal with integrated toe switch to activate effects and adjust parameters on the fly. Whether you’re destined for the stage or recording tracks in your home studio, the ME-90B’s ample I/O is happy to oblige, including a ground lift-enabled XLR jack and switchable Amp/Line 1/4-inch stereo output that covers both your at-home practice amp and any scaled-back straight-into-PA live rig. You also get a headphone jack for quiet practice, along with a USB-C for easy recording and for jamming along to tracks. Plus, you can even hook up the ME-90B to BOSS’s expansive Tone Exchange software to share presets, access professional sound collections, and much more. Portable, powerful, and professional grade in every aspect, the BOSS ME-90B puts an entire studio’s worth of sounds at your disposal.

Boss ME-90B Bass Multiple Effects Pedal at a Glance:

• All-in-one bass processor with premium BOSS amps and effects
• Easy stompbox-style sound creation with an intuitive knob-based interface
• Superior sound quality with 24-bit AD and 32-bit DA conversion, 32-bit floating-point processing, and 48 kHz sampling rate
• 61 effects from the BOSS bass effects library
• Ten onboard AIRD preamp models including newly developed types
• Dedicated preamp section plus six simultaneous effect categories with multiple types to choose from
• Edit parameters, swap out preamp and effect types, and more with BOSS Tone Studio
• Eight multi-function footswitches and an expression pedal with toe switch
• 36 ready-to-play preset memories and 36 user memories for storing custom setups
• Manual mode for pedalboard-style operation and Memory mode for switching complete setups
• Blend knob for mixing in the direct bass sound
• Stereo 1/4-inch outputs and mono XLR balanced output with ground lift switch
• Rear-panel switch to optimize the 1/4-inch audio outputs for a bass amp or full-range sound system
• Send/return loop for external pedals
• Light, durable design and colorful status LEDs
• Load up to three user speaker IRs
• Powered via four AA batteries or optional AC adaptor
• USB-C® connector for communicating with BOSS Tone Studio and audio recording/playback with music production software
• Download and share ME-90B Livesets on BOSS Tone Exchange
• Optional Bluetooth® Audio MIDI Dual Adaptor allows you to edit sounds and stream audio from an iOS or Android mobile device

Build your base tone with 10 AIRD preamps

The heart of the BOSS ME-90B lies in its robust selection of preamps, offering 10 different tones from which to concoct your sound. From original BOSS models to classic recreations to even acoustic-focused sounds, the ME-90B’s preamp section delivers stunning tones in spades thanks to its cutting-edge AIRD (Augmented Impulse Response Dynamics) technology. Lastly, the ME-90B’s impressive Preamp section is rounded out by an equally powerful assortment of EQ knobs to twist and tweak your tone to taste.

61 studio-grade effects to explore

Once you’ve dialed in your base tone, it’s time to explore the ME-90 B’s sweeping array of 61 top-class bass effects. Effects are separated into intuitive blocks for effortless navigation, including Modulation, Comp/FX1 (compression and pitch-based effects), Filter/FX2, Drive/Synth, and Delay/Reverb, with each block boasting its own set of parameter control knobs. Furthermore, Music Experience’s gigging bassists love how the ME-90 B’s onboard expression pedal also features a dedicated set of dynamic effects for in-the-moment experimentation. And to keep your signal clear and defined, the ME-90B offers a global Blend knob that allows you to mix in direct signal with your effect-laden wet tones.

Easy sound creation and flexible real-time control

Thanks to its knob-driven interface and stompbox-style layout, building configurations and tweaking tones with the BOSS ME-90B are a walk in the park. You get all the benefits of a well-appointed pedalboard without worrying about messy connection cables, power distribution, and cumbersome hook-and-loop fasteners. The ME-90B's eight footswitches operate smoothly and quietly, and its built-in expression pedal provides effortless real-time control over your effects. You can use the ME-90B's Memory mode to call up complete patch setups using the footswitches, or you can use Manual for direct control of each effect category within a patch. The footswitches on this guitar multi-effects pedal include colored LEDs for at-a-glance identification. Moreover, you can set the LEDs to light in a fixed color for each mode.

Extended configuration and editing

If you really want to extend the ME-90B's configuration and editing capabilities, fire up BOSS Tone Studio software on your Mac or Windows-based PC. With BOSS Tone Studio, you can edit tones, change out amp and effect types, and a whole lot more. You can also save and organize your patches for different applications, download professionally crafted setups from BOSS Tone Central, and swap patches with the robust ME-90B community on BOSS Tone Exchange.

What BOSS Says...

Introducing the ME-90B, a free-flowing ME processor filled with pro performance tools for bassists. Extend your creative range with 61 effects optimized for bass. Shape your core tone with 10 bass preamps crafted with our latest AIRD technology. Connect to stage amps, house PA systems, and computers. And with the hands-on interface, expression pedal, and direct-access footswitches, you can create and perform in the moment with nothing to slow you down.

Effortless Creative Control

The ME-90B delivers everything a performing bassist needs, accessed via the classic BOSS ME interface for fast stompbox-style operation. Each effect category features independent parameter knobs, allowing you to tweak tones instantly. Manual mode provides on/off footswitch control of each category, while Memory mode lets you call up 36 custom multi-effect setups. Every footswitch has a different LED color for easy identification, and it’s possible to set all LEDs to light in a fixed color for each mode if desired.

Premium BOSS Effects

The ME-90B comes stocked with premium selections from the BOSS bass effects library, organized into six logical sections that can be used simultaneously. Apply essential tone shapers like compressors, pitch effects, and filters. Explore more aggressive textures with drive and synth effects. Expand your sound with modulation, delays, and reverbs. And dive into a variety of dedicated effects for the onboard expression pedal. There’s also a Blend knob to mix in some direct bass sound for clarity, plus a send/return loop to patch in your favorite stompbox effects.

Solid Bass Tone

A strong fundamental sound is the foundation of any great bass rig. The ME-90B’s Preamp/EQ section features ten inspiring preamp types backed by advanced AIRD technology, complete with gain and EQ controls for rapid sound adjustment. Express your individual voice with BOSS originals like Natural and Drive Bass. Or call up authentic models of classic bass amplifiers from vintage to modern. There’s also an Acoustic type optimized for acoustic-electric and upright bass pickups, plus an EQ-only option for clean DI tones.

Perform, Practice, and Record

With its versatile connectivity and compact, battery-powered design, the ME-90B is ready for every playing scenario. The 1/4-inch outputs support mono or stereo operation, with quick optimization for stage amps or line-level devices via a rear-panel switch. There’s also an XLR jack with a ground lift for sending a balanced DI signal to a house PA. The ME-90B’s preamps and effects provide studio-quality sound for direct USB recording in music production software. And with the headphones jack, you can quietly hone your chops while jamming with backing tracks from a computer over USB.

Edit, Customize, and Expand

BOSS Tone Studio for Windows and macOS extends your creative range with the ability to edit tones and change out some preamp and effect types with alternate selections. You can also organize memories for different gigs and supplement the onboard speaker IRs with three from your own library. When you’re ready for fresh inspiration, log onto BOSS Tone Exchange to swap Livesets with the worldwide ME-90B community. And with the optional Bluetooth® Audio MIDI Dual Adaptor, you can stream music from a mobile device and wirelessly shape tones using the BTS editor app for iOS and Android.