Best Expander Modules Under $100 2026

The A-161 is a brilliant little module if you already own the A-160. It expands your rhythmic possibilities without taking up much space, offering a straightforward way to trigger multiple events from a single, precisely divided clock source – perfect for creating polyrhythms or driving multiple oscillators in a modular setup.

This Tiny MIDI Breakout is a brilliant little addition for Disting and ES-9 users who need simple MIDI routing. It's a no-fuss solution that gets the job done without hogging valuable rack space or drawing power. Perfect for modular enthusiasts wanting a streamlined MIDI workflow without extra complexity.

This Expert Sleepers breakout is a no-fuss, reliable solution for adding MIDI connectivity to your Eurorack. It's perfect for those already using modules like the Disting or General CV and needing a clean, simple way to integrate them into a larger MIDI setup – a real space saver and a solid performer.

The Atlx is a clever little expander for the Atlantix, adding a ring modulator and some seriously useful routing options. If you’re already invested in the Atlantix ecosystem and want to explore more complex textures and signal paths, this is a no-brainer—it really opens up the Atlantix’s potential without taking up a ton of space.

This small module adds clean stereo output to your Eddy synth without needing a power supply. It lets you tap three specific filter frequencies directly into separate mix, distortion, or compression buses. Ideal for a budget-friendly rig that needs more signal paths without extra power bricks.

This little module is a brilliant addition to the Malekko SYNC if you're looking to fan out your clock signals. It's super compact, gives you flexible division options, and is a really affordable way to expand your sequencing capabilities—ideal for anyone building a modular system focused on Malekko’s unique timing architecture.

The Ustka is a brilliantly simple solution for anyone already using an Ostrawa. It gives you a clean, direct stereo output from each voice, perfect for routing to effects or external recording without messing with levels. It’s a no-brainer addition for Ostrawa users seeking streamlined signal paths.

The Hel is a clever little expander for the Odessa, letting you wrangle multiple voices with dedicated CV control. If you're already in the XAOC ecosystem and want to push the Odessa beyond single-voice sounds, this is a brilliant and affordable addition – especially for sound designers and experimental musicians.

The Poti II is a brilliant little module if you're already invested in the XAOC Batumi II. It unlocks a ton of control over those LFOs, letting you dial in incredibly precise and nuanced modulation—essential for sound design and complex sequencing. It's a must-have for experimental electronic musicians.