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EX4

BOSS EX-4 Effects Expander Pedal EX4

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Product Information

Take your creative vision to the next level with the EX-4, an innovative BOSS effects unit that expands the range of your pedalboard—without changing what already works. This compact inspiration machine complements your current setup with new sound-shaping options and real-time performance tools, encouraging you to explore fresh textures with the rig you already love.

  • Compact effects processor that expands the capabilities of any pedalboard
  • 120 premium BOSS effects, including overdrives/distortions, mod effects, delays, reverbs, and more
  • Run up to four effects at once, including multiple instances of the same effect
  • Dedicated utility blocks, including foot volume, two noise suppressors, send/return, and divider/mixer
  • Fluid operation with an informative color display, intuitive knobs, and dedicated FX buttons
  • Independent global EQ for overall sound shaping
  • Gear Suite feature allows you to quickly configure each effect with the turn of a knob
  • Control effects using dual multi-function footswitches with color LEDs
  • Versatile mono/stereo I/O, flexible effect loop, and space-saving TRS MIDI jacks
  • Manual and Memory modes for stompbox-style or preset-based effect control
  • 128 preset memories for guitar and bass, plus 128 user memories for saving custom sounds
  • Create complex effect configurations with advanced series, parallel, and wet/dry options
  • Use the effect loop to build reorderable chains with external pedals
  • Seamless memory changes with full carryover of delay and reverb effects possible with certain effect configurations
  • Use the footswitches for basic effect and preset control, or access deeper assignment features for sophisticated custom operation

Expanded Range, Minimal Size

Modern players carefully curate their pedalboard builds, and every slot must earn its place. The EX-4 more than carries its weight, delivering a vast library of historic BOSS effects in a modest footprint. It’s the ideal utility pedal for musicians who love to experiment with effects, and an essential tool for stage players who cover many songs/styles and studio musicians who need to build professional sounds when the clock is ticking.

Your Creative Launchpad

With up to four simultaneous effects and flexible connectivity to integrate with everything on your board, the EX-4 has what you need to elevate your core sound with a universe of tonal possibilities. The interface is designed for immediate results, providing a fluid platform to dial up inspiring tones without endless tweaking.

Effects to the Max

Every major category is available among the 120 effect selections in the EX-4, including overdrive and distortion, modulation, delay, and reverb, as well as bass-tuned effects and unique BOSS favorites like Slow Gear and Slicer. You also get foot volume and other dedicated utility blocks that can be placed anywhere within an effect chain, plus a global EQ for overall sound shaping.

Build Sounds Fast with Gear Suite

The EX-4’s Gear Suite feature enables lightning-fast tone creation with ready-to-go sounds. Each effect type has multiple Gear Suite settings with professionally tuned parameters, all available with the turn of a knob. Better still, you can edit effect parameters and save your favorites for instant access to custom settings for every effect.

Free-Flowing Interface

A 2.4-inch color display gives you a clear, inviting view of the full signal chain, individual effect blocks, editing options, menus, and more. With dedicated FX buttons, you can turn effect blocks on/off with a single press and access editing parameters with a long press. Button colors dynamically change to match the display's effect colors, making navigation frustration-free.

Dual Footswitches with Split LEDs

Rugged dual-function footswitches can be custom-configured to suit your performance needs, with assignments that include effect block on/off, memory up/down, master bypass, tap tempo, individual parameter control, and more. A newly designed color LED system surrounds the footswitches, making it easy to identify the current footswitch functions as you perform.

Connect and Create

Four audio jacks support mono or stereo connectivity, with the option to use two jacks as an effect loop to place external pedals anywhere in the EX-4's effect chain for complex sound configurations. Two footswitches or an expression pedal can be connected for more real-time control, while space-saving TRS MIDI I/O unlocks deep integration with other MIDI pedals, switching systems, and external clocking devices.

Specifications

  • Sampling Frequency: 48 kHz
  • AD Conversion: 24 bits + AF method
  • AD Conversion Note: AF method (Adaptive Focus method) This is a proprietary method from Roland & BOSS that vastly improves the signal-to-noise (SN) ratio of the AD and DA converters.
  • DA Conversion: 32 bits
  • Processing: 32-bit floating point
  • Effects: 120 types
  • Maximum Number of Effects: 4(FX1-4) + 6(DIVIDER+MIXER, SEND RETURN, FOOT VOLUME, NOISE SUPPRESSOR1, NOISE SUPPRESSOR2, GLOBAL EQ)
  • Memories: 128 (User) + 128 (Preset)
  • Nominal Input Level: INPUT L/MONO jack, INPUT R(RETURN) jack: -10 dBu
  • Maximum Input Level: INPUT L/MONO jack, INPUT R(RETURN) jack: +7 dBu
  • Input Impedance: INPUT L/MONO jack, INPUT R(RETURN) jack: 1 M ohm
  • Nominal Output Level: OUTPUT L/MONO jack, OUTPUT R(SEND) jack: -10 dBu
  • Output Impedance: OUTPUT L/MONO jack, OUTPUT R(SEND) jack: 1 k ohm
  • Recommended Load Impedance: OUTPUT L/MONO jack, OUTPUT R(SEND) jack: 10 k ohms or greater
  • Controls: DOWN/1 switch, UP/2 switch, MENU/EXIT button, GEAR SUITE button, FX1 button, FX2 button, FX3 button, FX4 button, SELECT knob, TYPE/VALUE knob, 1-3 knobs
  • Display: Color Graphic LCD (320 x 240 dots)
  • Connectors: INPUT L/MONO jack, INPUT R(RETURN) jack, OUTPUT L/MONO jack, OUTPUT R(SEND) jack, : 1/4-inch phone type; MIDI IN jack, MIDI OUT jack : Miniature phone type; CTL1([3]),2([4])/EXP jack: 1/4-inch TRS phone type; USB port: USB Type-C(R); DC IN jack
  • Power Supply: AC adaptor (PSA-S series)
  • Current Draw: 300 mA

Accessories

  • Included Accessories: STARTUP GUIDE; Leaflet "Read Me First"; AC adaptor: PSA-S series; Rubber foot x 4

Options (Sold Separately)

  • Footswitch: FS-5U, FS-5L, FS-6, FS-7
  • Expression Pedal: FV-500L, FV-500H, EV-30, Roland EV-5
  • TRS/MIDI Connecting Cable: BMIDI-5-35, BMIDI-1-35, BMIDI-2-35, BCC-1-3535, BCC-2-3535

Size and Weight

  • Width: 117 mm / 4-5/8 inches
  • Depth: 138 mm / 5-7/16 inches
  • Height (without rubber feet): 63 mm / 2-1/2 inches
  • Height (including rubber feet): 65 mm / 2-9/16 inches
  • Weight: 800g / 1 lb 13 oz

Warranty

2 Years Warranty
Warranty & Support 

All products are backed by the original manufacturer’s warranty, giving you confidence that your purchase is protected. If you ever need to make a claim, the process is simple — just email us at warranty@belfieldmusic.com.au with the following info:

Name:
Invoice/Order Number:
Item:
Fault Description:
Serial Number:
Email:
Contact Number:
Address:
 
Our team will guide you through the next steps and arrange a repair, replacement, or refund where applicable. We aim to make the process quick and stress-free, so you can get back to enjoying your gear as soon as possible. 

 

Shipping Policy

All orders over $200 will be automatically eligible for FREE Shipping Australia Wide, if you order is under $200 there will be a flat rate of $12.

Belfield Music is well known for its top online customer service. We treat all online customers with the same excellent service we give to our in store customer. We will ensure that you receive all the support you need while your goods are in transit and ensure the goods arrive promptly. All of our shipments have tracking numbers available and we cover every single unit by our own shipping insurance.     

Online orders are normally processed within 1-3 business days. Once processed, your order should take between 1-8 business days to arrive depending on your location. Please note that your order may take up to 10 business days to arrive from the day you place your order. 

If it transpires that the product is out of stock due to a stock discrepancy and/or there will be a delay in shipment, we will contact you within 2 business days of placing your order and give you the option of waiting or cancelling your order. The products we advertise online should show if they are in stock or not. We do our best to keep the website stock count up to date, but there may be an occasional error.

If you wish to utilize an Express Delivery Service to receive your item, please contact us for a shipping quote before you place your order at admin@belfieldmusic.com.au or by using the Chat icon on the bottom right of the page.           

Deliver is made during the hours from 8:00am till 5:30pm Monday to Friday. As such, please ensure you nominate an address which is capable of receiving goods during 8am and 5.30pm.  Given the restrictions on PO Box deliveries we cannot deliver larger sized items to a PO Box.

If for any reason our selected carriers don't service your area we will contact you before processing your order if this applys to you.

 

Returns Policy

If you wish to return an item which is not damaged or faulty in any way and you have simply changed your mind or made the wrong decision, you must let us know within 7 days of receiving the item.  We will not agree to refund an item because you simply changed your mind or made the wrong decision if we have not been advised of your intention within 7 days of receiving your item. Once we have provided a return authority, it is the buyer’s responsibility to return the item, at their own costs within 30 days from original purchase. If the item is returned with any damage or alteration to its original packaging, we will refund the item subject to applying a minimum 15% restocking fee.  We will not refund the costs of the initial shipping charges.

It is in Belfield Music best interests to keep our customers happy with their purchases. If you are not happy with your purchase, please talk to us first. We will always attempt to resolve any problems you may have as best we can. To contact us please email us at admin@belfieldmusic.com.au or by using the Chat icon on the bottom right of the page.