AudioFuAudioFu Chart · October 2026
Best Logic Modules for Beginner 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. Schlappi Engineering BTMX leads the high end. Ranked by the AudioFu Index from 16 models across 7 brands, prices checked every night.
Last updated: October 15, 2026
Top 10
Full detail for the 10 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 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
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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 A-166 is a solid, no-frills logic module from Doepfer, perfect for those getting into modular synthesis or needing a reliable foundation for basic sequencing and pattern generation. Its straightforward design and compact size make it an excellent choice for smaller racks, though experienced modular users might find it a bit limiting for intricate workflows.
Pros
- Reliable Doepfer build quality ensures long-term stability.
- Compact 8HP footprint maximizes patching flexibility.
- Clear LED indication simplifies complex logic operations.
Cons
- Limited input count restricts complex signal routing.
- Basic functionality lacks advanced features of pricier modules.
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The Compare 2 is a seriously clever module for anyone wanting to turn audio or CV into intricate rhythmic patterns. It’s incredibly versatile for creating unique sequences and complex gate patterns, and the compact size makes it a great addition to smaller Eurorack cases – especially for experimental musicians and sound designers.
Pros
- Highly flexible rhythmic extraction from diverse audio sources
- Shift and Size controls offer nuanced pattern shaping
- Comprehensive logic section expands rhythmic possibilities significantly
Cons
- Limited input headroom can cause clipping with hot signals
- Logic section's complexity demands a learning curve for beginners
69AudioFu
IndexStableno change since Aug 14Aug 14$212 now$212€189 at Thomann · in stockCheck price ↗ -
The Klavis ComPair is a seriously useful little module for anyone diving into more advanced sequencing and modulation techniques. Its compact size and multiple comparator modes make it a great choice for tight racks and adding rhythmic complexity to your patches. If you're into generative music or experimental sound design, this is a great, affordable tool to get into the game.
Pros
- Excellent voltage control for dynamic sequencing and modulation.
- Window comparator mode opens creative rhythmic possibilities.
- Compact 3HP footprint maximizes valuable rack space.
Cons
- Limited input flexibility compared to more complex comparators.
- 3HP size restricts more intricate routing options.
67AudioFu
Index↓ 17.8%since Aug 14 · lowest so far$151 · Aug 14$124 now$124€111 at Thomann · in stockCheck price ↗ -
The Klavis Logica XT Black is a tiny powerhouse for gate manipulation. It's perfect for experimental electronic musicians and those needing precise, compact logic sequencing within their modular setup—just be mindful of its current draw and the initial learning curve involved in mastering its modes.
Pros
- Extremely compact 5HP footprint maximizes precious Eurorack space.
- 14 operating modes offer surprising flexibility for gate sequencing.
- Klavis’s build quality is consistently excellent; feels rock solid.
Cons
- Limited input count (3) can be restrictive in complex setups.
- 21mA current draw is noticeable, especially in power-constrained systems.
62AudioFu
Index↓ 7.2%since Aug 14 · lowest so far$156 · Aug 14$144 now$144€129 at Thomann · in stockCheck price ↗ -
The BTMX is a seriously clever little module. It’s perfect for experimental sound designers and anyone wanting to build complex modulation sequences – think granular processing, rhythmic gate patterns, or creating intricate control systems. Schlappi’s attention to detail really shines here, offering a robust and functional logic solution for your modular system.
Pros
- Four channels offer significant routing flexibility for complex patterns.
- Logic functions expand modulation possibilities beyond simple mixing.
- Compact 8HP footprint saves precious space in dense racks.
Cons
- Limited input count per channel restricts intricate signal manipulation.
- Stepped CV output lacks fine-grained control for subtle modulation.
60AudioFu
Index↓ 6.7%since Aug 14 · lowest so far$234 · Aug 14$218 now$218€195 at Thomann · in stockCheck price ↗
All 16 logic modules
Same index, same nightly prices — compact. Colour options of one model share a row. Tap a photo to zoom.
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Klavis Two BitsKlavis · 2 finishes58Stable$156€139$156€139Check ↗
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Schlappi Engineering Nibbler BlackSchlappi Engineering · 2 finishes56Stable$268€239$268€239Check ↗
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Doepfer A-152 Addressed T&H/SwitchA-152 · Doepfer49Stable$189€169$189€169Check ↗
- 14
XAOC Devices ErfurtXAOC Devices44Stable$167€149$167€149Check ↗
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XAOC Devices PoczdamXAOC Devices44Stable$218€195$218€195Check ↗
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Joranalogue Audio Design Walk 4Joranalogue Audio Design44Stable$301€269$301€269Check ↗
Logic Modules by the numbers
Measured across all 21 models we track, not a sample.
Median $156 — half of all logic modules here cost less.
How to choose the best logic modules
Playability
This isn't just about knobs turning smoothly. It's about intuitive layout, logical routing, and a feeling of control. A module that's a pain to patch is a module you won't use, no matter how cool the tone.
Complexity
A beginner shouldn't be wrestling with obtuse patching schemes. Modules with clear functions and a reasonable number of parameters are key. We're looking for modules that teach you concepts, not bury you in them.
Sound Character
Forget 'versatile' - we want modules that have a personality. A subtle warmth, a gritty edge, a shimmering resonance - something that inspires a particular direction for your sound. Generic sounds are boring, even if they're technically 'clean'.
Learning Curve
Modular synthesis is already a steep learning curve. Modules that have a gradual learning curve - offering simple applications initially and more depth as you progress - are far more rewarding for beginners.
Build Quality & Reliability
Let's be honest, cheap modules can fail. A flaky oscillator or a noisy filter will kill your inspiration faster than anything. Solid construction and good component choices are worth the extra investment, especially if you plan to gig.
Buying guide
So you're diving into the modular world? Awesome! It's a rabbit hole, but a rewarding one. Starting with Logic Modules - those Eurorack building blocks - is a smart move. Let's cut through the hype and find some modules that won't leave you overwhelmed and frustrated, but will actually inspire you to make some cool sounds.
Don't go all-in on a massive system right away. Start with a few core modules - a VCO, a VCF, an envelope generator, and a simple mixer. Used gear is your friend - you can often snag modules for a fraction of the new price.
Be wary of modules that promise 'everything' - they usually compromise somewhere, often in sound quality or build. Prioritize modules that spark your creativity over those with a laundry list of features you don't understand.
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 21 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
What's the difference between a Logic Module and a Utility Module?
Logic Modules usually have some form of processing or modulation, like a wave shaper or a sequencer. Utility Modules are more about routing, mixing, and basic signal manipulation - they're the glue that holds everything together.
I'm on a tight budget. Where should I save money?
Power supplies are not the place to cheap out. Get a reliable one. On modules themselves, look for used options or smaller brands - they often offer great value. Don't sweat the fancy OLED displays or endless knobs at first.
How do I learn modular patching?
Start simple. Watch tutorials, follow patch recipes, and don't be afraid to experiment. The best way to learn is to make mistakes and figure out why something doesn't sound right. And document your good patches - you'll forget them otherwise.
What's a good first module?
Mutable Instruments Plaits is a fantastic starting point - it's incredibly versatile and has a relatively gentle learning curve. Intellijel Dixie II+ is a solid, straightforward VCO. Erica Synths Polivoks VCF is a classic for a reason - that gritty, resonant filter is addictive.
Can I use a modular synth for songwriting?
Absolutely! While they can be intimidating, modular synths can be amazing songwriting tools. Start by creating simple, repeatable sequences and evolving textures. It's about finding the sweet spot between controlled experimentation and focused creativity.
