AudioFuAudioFu Chart · October 2026
Best Logic Modules for Professional 2026
The top pick is Schlappi Engineering Nibbler ($279). Doepfer A-166 Dual Logic Module gives you the most for the money at $111. 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 Nibbler is a seriously cool little module for those diving deep into modular rhythms and sequencing. It’s not a beginner’s tool, but if you’re comfortable with logic and want to craft intricate, lo-fi sequences and glitchy control signals, this thing unlocks a unique sound. It’s a great choice for experimental electronic musicians and sound designers.
Pros
- Cherry MX Braun button provides satisfying, tactile reset action.
- 4-bit accumulator offers surprising rhythmic complexity and control.
- Flexible input architecture allows for intricate modulation possibilities.
Cons
- 4-bit resolution limits fine-grained control over certain sequences.
- Steep learning curve for users unfamiliar with logic modules.
56AudioFu
IndexStableno change since Aug 14Aug 14$279 now$279€249 at Thomann · in stockCheck price ↗ -
This module makes voltage behave in strange, step-by-step ways. It has a clock that moves exactly one volt for every octave, letting you sync the chaos to your tempo. It works well for musicians who want unpredictable timing without needing extra gear.
Pros
- Stores voltage in discrete steps for unique rhythmic timing.
- Includes built-in clock generator tracking one volt per octave.
- Allows shared control over trend, constraints, and volatility.
Cons
- No CV outputs listed for other modules to read values.
- Very shallow depth at only thirty millimeters.
44AudioFu
IndexStableno change since Aug 17Aug 17$301 now$301€269 at Thomann · in stockCheck price ↗ -
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 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 ↗ -
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 Klavis Two Bits Black is a seriously clever little module for anyone wanting to dive into complex modulation. Its dual sections and 15 modes offer a surprising amount of logic processing in a tiny package – perfect for experimental sound design and generative sequences, especially if you're space-conscious.
Pros
- Highly versatile logic operations for complex modulation sequences.
- Compact 5HP footprint maximizes precious Eurorack space.
- Chainable design doubles functionality without significant HP cost.
Cons
- Limited input/output options compared to larger logic modules.
- Steep learning curve for those unfamiliar with logic operations.
58AudioFu
IndexStableno change since Aug 14Aug 14$162 now$162€145 at Thomann · in stockCheck price ↗ -
The Klavis ComPair Black is a seriously useful little module for anyone wanting to inject some rhythmic or tonal variation into their Eurorack system. It's remarkably compact and the comparator modes offer a surprising amount of creative potential, especially for glitchy sequences or modulating envelope shapes. Great for experimental sound design and adding subtle movement.
Pros
- Excellent signal shaping with versatile comparator modes.
- Klavis build quality is consistently robust and reliable.
- Tiny 3HP footprint maximizes Eurorack space efficiency.
Cons
- Limited input flexibility compared to more complex modules.
- Three HP can feel cramped for intricate patching workflows.
64AudioFu
Index↓ 10.1%since Aug 14 · lowest so far$156 · Aug 14$140 now$140€125 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 ↗ -
This module lets you switch eight audio tracks and hold the signal instantly. It adds eight digital outputs so you can route signals anywhere in your rack. The LED lights make it easy to see what is connected. It works well as a simple controller for modular setups.
Pros
- Combines rotary switch and track hold in one compact unit
- Includes eight dedicated digital output channels for routing
- Features clear LED indicators for every input and output
Cons
- No physical knobs or faders for manual voltage adjustment
- Lacks built-in power supply, requiring external +12V source
49AudioFu
IndexStableno change since Aug 17Aug 17$189 now$189€169 at Thomann · in stockCheck price ↗ -
The Erfurt is a seriously powerful little module if you're diving into the XAOC Leibniz system. It's a workhorse for generating intricate rhythms and textures, but be warned – it's not a standalone solution and requires some understanding of binary logic to fully exploit its potential. Perfect for experimental electronic musicians and those embracing modular complexity.
Pros
- Exceptional bit resolution for complex rhythmic patterns.
- Tight, clean digital signals; minimal aliasing observed.
- Remarkably compact 6HP footprint maximizes patching density.
Cons
- Limited standalone utility outside of Leibniz modules.
- Steep learning curve for those unfamiliar with binary logic.
44AudioFu
IndexStableno change since Aug 14Aug 14$167 now$167€149 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.
- 11
XAOC Devices PoczdamXAOC Devices44Stable$218€195$218€195Check ↗
- 12
Doepfer A-150 Dual Voltage Controlled SwitchA-150 · Doepfer82↓ 1.5%$72€64$72€64Check ↗
- 13
Doepfer A-150-1 VEDoepfer49Stable$66€59$66€59Check ↗
- 14
Doepfer A-165-2Doepfer49Stable$95€85$95€85Check ↗
- 15
Shakmat Modular SumDifShakmat Modular43↓ 2.3%$97€87$97€87Check ↗
- 16
Intellijel Designs ORIntellijel Designs42Stable$54€48$54€48Check ↗
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 and jacks; it's about the module's responsiveness to input, its modulation range, and how intuitively it lets you dial in sounds. A module that feels clunky under your fingers is a productivity killer, especially when you're trying to tweak a sound on the fly during a set.
Complexity vs. Usability
Professional players need depth, but not at the expense of workflow. Modules with a million sub-parameters are cool, but useless if you can't navigate them quickly. The sweet spot is a module that offers complexity without feeling overwhelming.
Sonic Character
We're not after generic utility. The best modules have a distinct voice - a subtle warmth, a unique distortion, a particular harmonic richness. This is what separates a sound that blends in from one that makes a statement.
Modulation Capabilities
Professional players are modulating everything. Robust modulation input options (attenuators, offsets, multiple destinations) are crucial for dynamic and evolving sounds. A module that's just a static tone generator is a paperweight.
Noise & Headroom
A noisy module isn't just annoying; it ruins a clean recording and muddies a live mix. Headroom is equally important; you need to be able to push the module without it collapsing into a digital mess. Cheap modules often skimp here.
Buying guide
Alright, so you're stepping up your modular game beyond the bread and butter oscillators and filters. Logic modules are where things get interesting, but also where a lot of players get lost. It's not just about patching; it's about crafting sounds that cut through a live mix or provide that unique texture for a recording. This isn't a beginner's guide; we're talking serious sound design here.
Don't chase hype. Seriously. Modular is a rabbit hole, and some modules are all flash and no substance.
Pay attention to the input/output voltage ranges - mismatching levels can lead to clipping or a weak signal. It's almost always worth investing in modules from reputable manufacturers known for tight tolerances and reliable components; you'll save headaches (and money) in the long run.
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 sequencer?
A sequencer generates a sequence of notes or triggers. A logic module is more flexible; it processes those sequences (or any other signal) using logic gates, comparators, and other functions to create complex patterns, rhythms, and modulations.
Are Eurorack modules really worth the price?
Some are, some aren't. The barrier to entry is high, and the cost adds up quickly. But a well-designed module can unlock sounds you simply can't get elsewhere. Do your research and buy used to save some cash.
I'm overwhelmed by the number of options. Where do I start?
Start with a module that solves a specific problem. Need complex rhythm generation? Look at a clock divider or pattern generator. Want to manipulate audio signals? Explore logic-based effects processors. Don't try to learn everything at once.
My module is making a lot of noise. Is this normal?
Some noise is inherent in analog circuitry, but excessive noise indicates a problem. Check your power supply, ensure proper grounding, and verify that voltage levels are correct. A noisy module is a frustrating module.
Can I use these modules with software synthesizers?
Absolutely. Many modules can be controlled by software via MIDI or CV/Gate converters. This opens up a world of hybrid workflows, letting you combine the tactile feel of modular with the power of software.
