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BOSS EX4 Effects Expander Pedal with multiple control knobs and input/output jacks for guitar effects processing.
  • BOSS EX4 Effects Expander Pedal with multiple control knobs and input/output jacks for guitar effects processing.
  • BOSS EX4 Effects Expander Pedal with multiple control knobs and input/output jacks for guitar effects processing.
  • BOSS EX4 Effects Expander Pedal showing its interface with multiple knobs and input/output jacks for guitar effects processing.
  • BOSS EX4 Effects Expander Pedal, a compact guitar effects pedal with multiple effects and control knobs, on a pedalboard.
BOSS EX4 Effects Expander Pedal

Brand: BOSS

BOSS EX4 Effects Expander Pedal

SKU: EX4
$539.00 (2% off RRP)
RRP $549.00
Available to Order In
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Want to click & collect, or try in-store?

Both our Myaree and Wangara stores are open 9–5:30pm Monday – Friday, with Myaree open 9–7pm Thursdays, both stores 9–5pm on Saturday and closed on Sundays.

Stock is live across all three locations and updates as stock is sold, however we still encourage you to call ahead to the store if stock indicated here is low at your preferred location.

Click and collect is a service offered at both store locations, which may require stock to be moved between stores or from the warehouse, as such we request that if you have ordered online, to please wait for a confirmation message before heading to the store.

If stock is only indicated at our warehouse location it can still be transferred to your desired store, even if you just want to try it, just get in touch with your desired store during store opening hours and make a request!

Please also be aware that unless you have paid a deposit to hold an item, it will remain free for sale on the web even if it has been set aside in-store. To avoid disappointment we always recommend a 10% deposit, this can be done in-store or online, just get in touch!
Description

BOSS EX-4 Effects Expander brings expansive sound-shaping potential to pedalboards that demand more versatility without taking up more space. Designed for modern guitarists and bassists, it delivers a focused collection of premium BOSS effects in a compact format, opening up new creative possibilities for building dynamic, personalized tones.

  • Access 120 premium BOSS effects covering essential guitar and bass tones, with a focused effects-only design that expands an existing pedalboard without amp or cabinet simulation.
  • Full-colour display provides a clear view of the entire signal chain, while dedicated FX buttons offer instant effect control and deeper parameter access.
  • Build customized signal paths by freely rearranging effects and creating series, parallel, or wet/dry configurations to suit complex pedalboard setups.
  • Integrated utility blocks add practical signal-management options including foot volume, noise suppression, send/return, divider/mixer functions, and global EQ.
  • 128 preset memories for guitar and bass plus 128 user memories provide extensive storage for custom effect combinations and performance-ready setups.
  • Seamless preset changes preserve delay and reverb tails, allowing natural transitions between sounds without cutting off sustained effects.
  • Curated effect libraries provide ready-to-use sound starting points, while favorite settings can be saved for faster tone building and recall.
  • Dual multifunction footswitches with colour-split LED indicators provide clear performance control for effect switching, memory navigation, master bypass, tap tempo, and more.
  • Four audio jacks support stereo operation or mono configurations with an effects loop, allowing external pedals to be positioned anywhere within the EX-4 signal chain.
  • Expandable foot control supports two external footswitches or an expression pedal for real-time parameter and performance control.
  • Space-saving TRS MIDI connectivity integrates the EX-4 into sophisticated pedalboard and MIDI control systems.
  • Standard 9V power compatibility allows the BOSS EX-4 to integrate directly with existing pedalboard power supplies.
Pair With
Service & Repairs

Our Perth workshop offers expert servicing for guitars, drums, amps and more. From restringing to full rebuilds, most repairs are completed within a few days.
Shipping & Returns

We ship Australia-wide with reliable couriers, dispatching most orders within two business days. Unopened items can be returned within 7 days for a refund, while opened items may be eligible for store credit.
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