Boss EX-4: Compact Multi-FX Pedal With 120 Premium FX

Boss has officially unveiled the highly anticipated Boss EX-4 Effects Expander, a revolutionary compact multi-FX unit designed to declutter your pedalboard while instantly supercharging your rig’s sonic capabilities.

Priced competitively at $329.99/£289.00, this diminutive powerhouse packs 120 premium Boss effects into a single, pedalboard-friendly enclosure, offering an ultimate utility solution for session musicians, cover band players, and gigging guitarists who want maximum tonal flexibility without hauling a suitcase full of heavy stompboxes.

Big Tones in a Small Footprint

If you constantly battle for real estate on your pedalboard, the new Boss EX-4 could be the game-changer you need.

The pedal provides a massive library of 120 classic Boss effects, spanning everything from everyday essentials like overdrives, rich modulations, pristine delays, and lush reverbs, to adventurous textures and cult favorites like the Boss Slow Gear and Slicer.

It also includes a dedicated selection of bass-tuned effects, making it a highly versatile tool for low-end players.

Guitarists and bassists can run up to four effects simultaneously, building massive chains that can even feature multiple instances of the exact same effect for experimental sonic landscapes.

Advanced Routing and Utility Blocks

Beyond its vast effects library, the EX-4 acts as the brain of your rig. It boasts dedicated utility blocks you can place anywhere in your signal chain. These include:

• Foot Volume
• Two independent Noise Suppressors
• Send/Return Loop
• Divider/Mixer
• Global EQ (for fine-tuning your overall output)

With versatile wet/dry options and advanced series and parallel routing, creating complex, studio-grade effect configurations is effortless. The built-in effects loop is particularly noteworthy, allowing you to seamlessly integrate, reorder, and blend your favorite external analog pedals with the EX-4's digital engine.

Fast Workflow with the New Gear Suite

Menu-diving on stage is a thing of the past with the EX-4. Boss has introduced a powerful Gear Suite feature that makes it quick and easy to call up inspiring sounds in seconds.

Each effect type comes loaded with multiple professionally dialed-in settings, ready to use straight away with a simple turn of a knob. Finding your foundation tone is instant; from there, you can tweak parameters and save your perfect sound to one of the 128 user memories (alongside 128 factory preset memories) for instant recall later.

Stage-Ready Control and Connectivity

Designed explicitly for live performance, the Boss EX-4 features a bright, informative 2.4-inch color graphic LCD display (320 x 240 dots).

Navigating your chains is incredibly fluid, thanks to dedicated FX1-FX4 buttons, intuitive parameter knobs (Select, Type/Value, and Knobs 1-3), and customizable dual-function footswitches featuring clear color LEDs. Whether you prefer traditional stompbox-style control or a preset-based workflow, the EX-4 accommodates both through its versatile Manual and Memory modes.

Players will also appreciate seamless memory changes, which allow full carryover (spillover) of delay and reverb trails on certain effect configurations.

To ensure it slots into any existing setup, Boss has equipped the EX-4 with comprehensive I/O:

• Mono/Stereo Inputs and Outputs
• Space-saving TRS MIDI In/Out jacks
• A modern USB Type-C port
• A CTL/EXP jack for hooking up external footswitches (like the FS-5, FS-6, or FS-7) or expression pedals (such as the EV-30, FV-500H, or Roland EV-5).

High-End Audio Specifications

Under the hood, the EX-4 doesn’t compromise on processing power or audio quality. It operates at a 48 kHz sampling frequency and utilizes 32-bit floating-point processing. You get exceptional clarity and dynamic response thanks to its 32-bit DA conversion and 24-bit AD conversion driven by Boss's proprietary Adaptive Focus (AF) method.

Despite its immense power, the unit remains incredibly lightweight at just 800g (1 lb 13 oz) and measures a mere 117 x 138 x 63 mm (4.625 x 5.4375 x 2.5 inches). Power is supplied via the included Boss PSA-S series AC adaptor, requiring a modest 300 mA current draw.

The Boss EX-4 Effects Expander proves that you don't need a massive pedalboard to achieve massive tones. With a modern interface, studio-grade audio quality, and peerless routing options, the EX-4 is set to become an essential cornerstone for modern pedalboards everywhere.

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