Boss EX-4 Effects Expander

Take your creative vision to the next level with the BOSS EX-4 Effects Expander, a compact effects processor designed to expand the capabilities of any pedalboard. With 120 premium BOSS effects, up to four simultaneous effect blocks, dedicated utility blocks, flexible routing, and extensive real-time control, the EX-4 adds a wide range of sound-shaping possibilities while integrating with the gear you already use.

Key Features

• 120 premium BOSS effects, including overdrive/distortion, modulation, delay, reverb, bass effects, and more
• Run up to four effects simultaneously, including multiple instances of the same effect
• Dedicated utility blocks for divider/mixer, send/return, foot volume, two noise suppressors, and global EQ
• Gear Suite function with professionally tuned effect settings
• 2.4-inch color display with 320 × 240 resolution
• Dedicated FX buttons and two configurable footswitches with color LED indicators
• Mono or stereo operation
• Flexible send/return routing for integrating external pedals within the effect chain
• TRS MIDI input and output
• Connection for external footswitches or an expression pedal
• USB-C port
• 128 user memories and 128 preset memories

Specifications

Audio & Processing

Sampling Frequency: 48 kHz
AD Conversion: 24-bit + AF Method
DA Conversion: 32-bit
Processing: 32-bit Floating Point
Effects: 120 Types
Maximum Effects: 4 FX Blocks + 6 Utility Blocks
Memories: 128 User + 128 Preset

Connections

Inputs: INPUT L/MONO, INPUT R/RETURN — 1/4-inch
Outputs: OUTPUT L/MONO, OUTPUT R/SEND — 1/4-inch
MIDI: MIDI IN, MIDI OUT — Miniature Phone Type
Control/Expression: CTL1([3]), 2([4])/EXP — 1/4-inch TRS
USB: USB Type-C
Power: DC IN

Controls & Display

Footswitches: DOWN/1, UP/2
Buttons: MENU/EXIT, GEAR SUITE, FX1, FX2, FX3, FX4
Knobs: SELECT, TYPE/VALUE, 1–3
Display: Color Graphic LCD, 320 × 240 Dots

Power

Power Supply: BOSS PSA-S Series AC Adaptor
Current Draw: 300 mA

Dimensions & Weight

Width: 117 mm (4-5/8")
Depth: 138 mm (5-7/16")
Height: 63 mm (2-1/2") without Rubber Feet; 65 mm (2-9/16") including Rubber Feet
Weight: 800 g (1 lb 13 oz)

Included Accessories

Startup Guide
Read Me First Leaflet
BOSS PSA-S Series AC Adaptor
4 Rubber Feet