AudioFuAudioFu Chart · October 2026
Best Logic Modules Under $100 2026
The top pick is Doepfer A-150 Dual Voltage Controlled Switch ($72). Intellijel Designs OR gives you the most for the money at $54. Ranked by the AudioFu Index from 5 models across 3 brands, prices checked every night.
Last updated: October 15, 2026
Top 5
Full detail for the 5 highest AudioFu Index scores. Every other model is listed below.
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The A-150 is a rock-solid, bare-bones dual switch – exactly what you need when you want clean, reliable routing without extra frills. It’s perfect for modular beginners or experienced patchers who need a small, efficient way to direct signals. This is a workhorse module, plain and simple.
Pros
- Reliable Doepfer build quality, known for longevity
- Simple, clean switching action – no unwanted noise
- Compact 4HP footprint maximizes patching density
Cons
- Limited voltage range (-8V to +8V) restricts some applications
- Basic functionality; lacks advanced features of more complex routers
82AudioFu
Index↓ 1.5%since Aug 14 · lowest so far$73 · Aug 14$72 now$72€64 at Thomann · in stockCheck price ↗ -
The A-150-1 VE is a solid, no-frills dual switch for your modular rig. It’s a reliable workhorse for re-routing signals and creating interesting modulation pathways, especially valuable for those who want to experiment with signal flow without breaking the bank. This is a great starting point for someone building a basic modular system or expanding an existing one.
Pros
- Reliable Doepfer build quality ensures long-term stability.
- Dual switching expands routing possibilities within a modular system.
- Compact 4TE width fits comfortably in most Eurorack setups.
Cons
- Limited functionality compared to more complex logic modules.
- Black front panel can be a fingerprint magnet – a common Doepfer trait.
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The A-165-2 is a solid, no-frills logic module from Doepfer, perfect for those building sequencing and control systems. It’s a great way to create complex trigger patterns and manipulate clock signals without needing a full-blown sequencer module – a real workhorse for any modular enthusiast.
Pros
- Doepfer's robust construction ensures reliable, long-term operation within a modular system.
- The toggle flip-flop provides a simple yet powerful logic function for sequencing.
- Compact 2HP size maximizes space efficiency in dense Eurorack configurations.
Cons
- Limited to logic signals; unsuitable for audio processing, restricting its versatility.
- The 2HP width can be a constraint in smaller modular setups.
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The SumDif is a surprisingly useful little module for basic signal manipulation. It’s a great entry point for understanding modular logic and perfect for experimental sound design or CV processing where simple math is your goal. It's a solid, no-frills option for those building a budget-friendly Eurorack system.
Pros
- Excellent value for basic arithmetic operations.
- Compact 2TE form factor saves precious panel space.
- Clean summing and differentiation with minimal noise.
Cons
- Limited functionality compared to more complex logic modules.
- 15mA draw can add up in power-hungry racks.
43AudioFu
Index↓ 2.2%since Aug 14 · lowest so far$100 · Aug 14$97 now$97€87 at Thomann · in stockCheck price ↗ -
The Intellijel OR is a tiny but mighty utility module. It's perfect for sequencing and patching complex rhythmic patterns where you need to trigger something if *any* of your input signals are active. If you’re building a tight, feature-rich system, this is an essential piece.
Pros
- Extremely compact footprint, ideal for dense modular racks
- Provides a straightforward logical OR function, crucial for sequencing
- Intellijel’s renowned build quality ensures long-term reliability
Cons
- Limited functionality; a single OR operation only
- Passive design means no internal voltage manipulation
How to choose the best logic modules
Sound Quality
This isn't about pristine, sterile tones. It's about character - does it offer a usable color, a unique response, or a valuable processing option? We're looking for modules that bring something to the table, even with their budget limitations.
Utility
A module that sounds amazing but doesn't do anything is just a paperweight. We're prioritizing modules that offer useful functions - VCAs, ADSR envelopes, filters, LFOs - that are core to modular patching.
Build Quality
Plastic cases and flimsy knobs are a sign of corners being cut. We're assessing the robustness of the construction - will it survive being tossed in a gig bag and patched repeatedly?
Control Range & Precision
A limited control range on an LFO or a sloppy filter cutoff can kill your creative flow. We're checking the responsiveness and accuracy of the controls.
Noise Floor
Budget modules can sometimes be surprisingly noisy. We're listening for unwanted hum, hiss, or static that can muddy your signal and ruin a clean patch.
Buying guide
Alright, so you're diving into the modular world but your bank account's looking a little thin? Totally get it. You don't need Eurorack clones costing a grand to make some serious noise. We're talking Logic Modules - those little Eurorack-compatible utility and processing units - and we're hunting down the best bang-for-your-buck options under $100. Let's get you started without breaking the gig budget.
At this price point, you're making trade-offs. Don't expect boutique-level components or perfectly smooth control pots. Most of these modules will have a slightly higher noise floor than their pricier counterparts, and the dynamic range might be a bit compressed.
Prioritize utility over ultimate sonic fidelity - a decent VCA or envelope generator will get you further than a slightly-better-sounding reverb. Read reviews carefully and understand what you're sacrificing.
How the AudioFu Index works
Five measured signals and nothing else — no stars from strangers, no “tested by experts” we didn’t do. The weights are fixed and public. We don’t play these instruments; we measure the market around them.
This chart covers 5 logic modules from the Thomann catalogue. Before you buy, read hands-on reviews and, where you can, play it. Full methodology.
AudioFu earns a commission when you buy through our Thomann links. It never changes the order — the index does.
- Demand40%
How many of this exact model are for sale on Reverb right now — what musicians actually buy and resell.
- Lineup20%
How many finishes Thomann stocks — makers expand the models that sell.
- Price15%
Where the price has moved since we started tracking in August.
- Specs15%
How completely the maker documents it.
- Maker10%
How deep the brand’s range is in this category.
Questions
Are these modules truly Eurorack compatible?
Generally, yes. But double-check the power requirements (typically +12V and -12V) before plugging anything in. A mismatch can fry your PSU.
Can I use these modules for serious music production?
Absolutely. They're fantastic for adding unique textures, automating parameters, and creating experimental sounds. Just be aware of the limitations - they won't replace a full suite of high-end plugins.
What's the difference between a Logic Module and a clone?
'Logic Module' is a broad term. Many are clones of popular designs, but some are original. Clones are often cheaper, but originality can sometimes offer unique twists and features. Do your research on the specific module.
How do I power these modules?
You'll need a Eurorack power supply. There are tons of options out there, from basic brick modules to more sophisticated ones with power distribution. Make sure your PSU has enough amperage for all your modules.
What should I buy first?
A VCA and an envelope generator are your absolute essentials. Then, a filter to shape your sound. From there, expand based on what kind of sounds you're trying to create.
