Best Various Modules Under $100 2026

Alright, so you're diving into the modular world but your bank account isn't thrilled. Good news: you can get your hands dirty without mortgaging the house. We're focusing on various modules - utilities, mixers, attenuators, VCAs - the stuff that makes a modular system actually do something. This isn't about chasing that dream VCO, it's about getting the foundational elements right on a budget.

Last updated: April 11, 2026

The best various modules in 2026 are Joranalogue Audio Design Bias 2 (top pick), Doepfer A-168-1 for tighter budgets, and Doepfer A-197-3 for pros — selected from 15 options across 4 brands, priced $42–$97, ranked by brand, price and popularity.
Joranalogue Audio Design Bias 2 - Professional Music Instrument Photo
#1

Joranalogue Audio Design Bias 2

Unique Capabilities Creative Tools Experimental Features
Key Feature:
The Bias 2 is a seriously useful little utility module for Eurorack. It's brilliant for quickly adapting signals to work with other modules, especially when dealing with different voltage ranges or needing to level match. It’s a must-have for anyone building a modular system and wanting to tame unruly voltage control signals.
PROS
  • • Excellent scaling for adapting disparate voltage sources.
  • • Normalisation simplifies complex routing scenarios effectively.
  • • Compact 2HP footprint maximizes space in tight racks.
  • • Amplified output on Channel 2 boosts weak signals cleanly.
CONS
  • • Limited flexibility compared to more complex mixing solutions.
  • • Normalization can be a hindrance for dynamic signal paths.
  • • 20mA current draw can be significant in power-constrained systems.
2.8/5 AudioFu Score
Specs:
6/10
Detail:
7/10
Value:
9/10
Doepfer A-168-1 - Professional Music Instrument Photo
#2

Doepfer A-168-1

Unique Capabilities Specialized Functions Experimental Features
Key Feature:
The A-168-1 is a solid, no-frills PWM module, perfect for anyone wanting to add subtle or dramatic pulse width modulation without a ton of complexity. It’s a great entry point into PWM, especially for those with space constraints and a need for a straightforward, reliable solution.
PROS
  • • Simple, effective PWM shaping for evolving tones
  • • Compact 4HP footprint ideal for dense modular racks
  • • Internal potentiometers offer quick, convenient manual control
  • • Robust Doepfer build quality ensures long-term reliability
CONS
  • • Limited modulation options compared to more complex PWM modules
  • • Signal level can be low, requiring gain staging
  • • Basic LED indication lacks precise visual feedback
2.6/5 AudioFu Score
Specs:
6/10
Detail:
5/10
Value:
9/10
Doepfer A-197-3 - Professional Music Instrument Photo
#3

Doepfer A-197-3

Specialized Functions Unique Capabilities Experimental Features
Key Feature:
The A-197-3 is a handy little module if you're building a visual element into your modular system. It's straightforward to use, offering basic color and brightness control for LED strips, and its small size makes it perfect for those of us with cramped racks. Great for visual feedback or adding some ambiance to your performances.
PROS
  • • Compact 4HP footprint saves valuable space in modular setups
  • • Dedicated brightness control for each color offers precise LED manipulation
  • • External 12V power input provides flexibility and reduces module power draw
  • • Feedback signal indicates maximum brightness, preventing LED damage.
CONS
  • • Limited to 12V LED strips, restricting compatibility with other systems
  • • The included LED strip is a basic add-on, likely of lower quality
  • • No PWM or advanced LED control beyond simple brightness adjustment.
2.6/5 AudioFu Score
Specs:
6/10
Detail:
5/10
Value:
9/10
Doepfer A-151 VE - Professional Music Instrument Photo
#4

Doepfer A-151 VE

System Enhancement Creative Tools Experimental Features
Key Feature:
The A-151 VE is a fantastic, budget-friendly entry point into modular sequencing. It's perfect for beginners or those wanting a no-frills, reliable step sequencer for basic melodic or rhythmic ideas – it’s a workhorse for creating driving basslines and simple arpeggios.
PROS
  • • Robust black front panel adds a touch of vintage aesthetic.
  • • Simple rotary design provides immediate, intuitive sequencing.
  • • Compact 4U size maximizes space in tight Eurorack setups.
  • • Versatile 2, 3, or 4-step sequencing caters to varied rhythms.
CONS
  • • Limited to four steps; complex patterns require patching solutions.
  • • Basic functionality lacks advanced features like probability or randomization.
  • • Vintage Edition implies older components; potential for slightly higher noise floor.
2.4/5 AudioFu Score
Specs:
6/10
Detail:
4/10
Value:
9/10
Doepfer A-138f - Professional Music Instrument Photo
#5

Doepfer A-138f

Specialized Functions System Enhancement Unique Capabilities
Key Feature:
The A-138f is a seriously useful little module for anyone wanting to blend signals in a modular environment – think percussive textures, dynamic filter sweeps, or even quirky CV modulation. It’s a Doepfer, so you know the build is solid, and at this price point, it's an incredibly affordable way to add a lot of flexibility to your patch. Perfect for experimental sound design and glitchy sequences.
PROS
  • • Robust Doepfer build quality ensures longevity and reliability.
  • • Three-way crossfading offers nuanced signal blending possibilities.
  • • Compact 4TE width maximizes modular space efficiency.
  • • Versatile CV and audio routing expands creative patching options.
CONS
  • • Limited input count per channel restricts complex signal manipulation.
  • • Knob resolution could be finer for precise crossfading adjustments.
  • • The black plastic housing feels somewhat basic compared to premium modules.
2.2/5 AudioFu Score
Specs:
6/10
Detail:
4/10
Value:
9/10
Behringer 297 Dual Portamento/CV Util. - Professional Music Instrument Photo
#6

Behringer 297 Dual Portamento/CV Util.

Specialized Functions Experimental Features Unique Capabilities
Key Feature:
The 297 is a clever little module for adding portamento and CV manipulation to your modular system. It's a great way to experiment with glide and voltage control without a huge investment, making it ideal for beginners or anyone wanting to add some extra sonic textures. Its dual design and mixer functionality give it surprising depth for its size and price.
PROS
  • • Dual portamento sections offer incredible expressive possibilities.
  • • Mixer sections provide flexible voltage manipulation and routing.
  • • Compact 16HP footprint maximizes modular space efficiency.
  • • Extremely affordable entry point into advanced modulation.
CONS
  • • Plastic construction feels less robust than higher-end modules.
  • • Limited mixer channel count might restrict complex patching.
  • • CV input range (-10V to +10V) restricts compatibility with some sources.
2.0/5 AudioFu Score
Specs:
6/10
Detail:
3/10
Value:
9/10
Der Mann mit der Maschine TRS Tool - Professional Music Instrument Photo
#7

Der Mann mit der Maschine TRS Tool

Specialized Functions Custom Solutions System Enhancement
Key Feature:
This little TRS Tool from Der Mann mit der Maschine is a seriously clever space-saver. It's perfect for Eurorack users who need basic signal routing without adding power draw or HP. Think of it as a utility belt for your modular – simple, functional, and surprisingly useful.
PROS
  • • Extremely compact 2HP footprint maximizes modular space.
  • • Passive design eliminates power supply requirements, simplifying patching.
  • • Versatile signal routing handles audio, CV, and MIDI signals.
  • • TRS A/B swapper offers flexible MIDI signal manipulation.
CONS
  • • Passive design limits functionality compared to active signal routers.
  • • Build quality feels basic; plastic housing lacks premium feel.
  • • Limited routing options; not a comprehensive signal distribution solution.
1.8/5 AudioFu Score
Specs:
6/10
Detail:
3/10
Value:
9/10
Behringer 921A Oscillator Driver - Professional Music Instrument Photo
#8

Behringer 921A Oscillator Driver

Specialized Functions Unique Capabilities System Enhancement
Key Feature:
The 921A is a clever piece for anyone diving into serious oscillator patching. It's essentially a central command hub for a swarm of 921Bs, allowing for complex, evolving textures and sequences. Great for experimental sound design and those wanting to explore the depths of analog synthesis without a massive investment.
PROS
  • • Centralizes control of multiple 921B oscillators for complex sounds
  • • Precise semitone/octave switching ensures accurate tuning
  • • Summed CV inputs offer flexible modulation routing options
  • • Affordable price point expands modular possibilities for budget-conscious users
CONS
  • • Requires multiple 921B oscillators for full functionality; a driver alone is limited
  • • 8HP footprint can be restrictive in smaller Eurorack cases
  • • Build quality, while acceptable, isn’t quite as robust as higher-end modules
1.8/5 AudioFu Score
Specs:
6/10
Detail:
3/10
Value:
10/10
Behringer CP1A - Professional Music Instrument Photo
#9

Behringer CP1A

Creative Tools Experimental Features System Enhancement
Key Feature:
The CP1A is a fantastic, budget-friendly way to get started with Eurorack. It's perfect for beginners or those wanting to expand their modular system without a huge investment, offering a surprising amount of flexibility with those flying bus boards. Just be mindful of the power limitations if you’re planning on running a lot of big, hungry modules.
PROS
  • • Extremely affordable entry point into Eurorack power solutions
  • • Flying bus boards offer incredible module flexibility and organization
  • • Compact 4HP footprint saves valuable rack space
  • • Includes a dedicated external power supply for clean power delivery
CONS
  • • Limited power output restricts larger, power-hungry module setups
  • • Plastic construction feels less robust than higher-end alternatives
  • • Flying bus board slots can become cumbersome with complex patching
1.7/5 AudioFu Score
Specs:
6/10
Detail:
3/10
Value:
9/10
Doepfer A-183-4 - Professional Music Instrument Photo
#10

Doepfer A-183-4

Experimental Features Creative Tools Custom Solutions
Key Feature:
The A-183-4 is a seriously useful little module for anyone working with digital control signals in Eurorack. It’s perfect for expanding the voltage range of your triggers and gates, or for simplifying complex signal routing. Its small size makes it ideal for tight, densely-patched systems where space is at a premium.
PROS
  • • Extremely compact 2HP footprint maximizes patching density.
  • • Reversible functionality provides signal conversion flexibility.
  • • Normalization simplifies buffering and signal multiplication tasks.
  • • Robust Doepfer build quality ensures long-term reliability.
CONS
  • • Limited to digital signals; unsuitable for analog audio processing.
  • • 30mA power draw can impact power budget in smaller systems.
  • • 2HP width might be restrictive for complex patching scenarios.
1.7/5 AudioFu Score
Specs:
6/10
Detail:
3/10
Value:
9/10
Doepfer A-185-2 VE - Professional Music Instrument Photo
#11

Doepfer A-185-2 VE

Specialized Functions System Enhancement Experimental Features
Key Feature:
The A-185-2 VE is a workhorse for anyone needing to combine and manipulate multiple CV signals. It's a simple, reliable, and affordable way to build complex modulation sequences – perfect for experimental sound design or creating intricate rhythmic patterns. Doepfer’s quality shines through, making it a dependable addition to any modular system.
PROS
  • • Rock-solid Doepfer build quality; feels very substantial.
  • • Excellent precision for complex modulation routing.
  • • The attenuator input offers nuanced control over CV signals.
  • • Compact 6HP footprint maximizes modular space efficiency.
CONS
  • • Limited input flexibility compared to more advanced bus modules.
  • • Black front panel can be a fingerprint magnet, like most Doepfer modules.
  • • 10mA power draw is fairly typical but can be a consideration in dense racks.
1.7/5 AudioFu Score
Specs:
6/10
Detail:
3/10
Value:
9/10
Doepfer A-182-4 - Professional Music Instrument Photo
#12

Doepfer A-182-4

Specialized Functions Experimental Features Creative Tools
Key Feature:
The A-182-4 is a super handy little module for anyone wanting to reroute signals without adding any extra power consumption. It’s a straightforward, no-frills solution for creating custom patch routings, perfect for experimental sound design or basic signal organization in a busy modular setup.
PROS
  • • Simple, reliable routing for signal manipulation and patching possibilities.
  • • Internal jumper allows for a flexible 4x4 matrix configuration.
  • • Doepfer's renowned build quality ensures durability and long-term reliability.
  • • Passive design eliminates power draw, simplifying modular power needs.
CONS
  • • Passive nature means signal loss can occur with long or complex routings.
  • • Limited to simple routing; lacks advanced features like signal processing.
  • • 4 TE width can be restrictive in smaller Eurorack cases.
1.5/5 AudioFu Score
Specs:
6/10
Detail:
3/10
Value:
9/10
Der Mann mit der Maschine TRS Split - Professional Music Instrument Photo
#13

Der Mann mit der Maschine TRS Split

System Enhancement Experimental Features Unique Capabilities
Key Feature:
This little guy is a surprisingly useful utility module. It's a clean, simple way to split audio or CV signals for experimentation and routing. Perfect for modular beginners or anyone needing a compact, no-fuss splitter without the power draw of an active solution.
PROS
  • • Excellent signal integrity with minimal loss across all three splits.
  • • Compact 2HP footprint maximizes precious modular space.
  • • Passive design eliminates power supply concerns and noise introduction.
  • • Robust construction; feels solid and dependable despite its size.
CONS
  • • Passive design means signal level is attenuated, might need gain compensation.
  • • 3.5mm jacks are a bit fiddly for larger hands/cables.
  • • Limited to three splits; more complex routing needs other modules.
1.5/5 AudioFu Score
Specs:
6/10
Detail:
3/10
Value:
9/10
Doepfer A-182-2 - Professional Music Instrument Photo
#14

Doepfer A-182-2

Unique Capabilities Creative Tools Specialized Functions
Key Feature:
The A-182-2 is a seriously handy little module for anyone tight on space and needing basic routing. It’s a simple, no-frills solution for splitting or combining signals, perfect for beginners or experienced modular users who want a reliable, budget-friendly routing option without introducing any unwanted color to their signal.
PROS
  • • Extremely compact 4HP footprint maximizes patching density.
  • • Simple, reliable switching avoids complex circuitry failures.
  • • Passive design ensures signal integrity with minimal coloration.
  • • Affordable entry point into modular routing solutions.
CONS
  • • Limited to four switching groups, restricting complex routing.
  • • Passive nature means signal level is dependent on source strength.
  • • No visual indication of switch position – purely tactile.
1.5/5 AudioFu Score
Specs:
6/10
Detail:
3/10
Value:
9/10
Joranalogue Audio Design Add 2 - Professional Music Instrument Photo
#15

Joranalogue Audio Design Add 2

Specialized Functions Creative Tools Unique Capabilities
Key Feature:
The Add 2 is a seriously useful little module if you're dealing with summing signals in your modular setup. Joranalogue’s build quality shines through, and the averaging mode is a lifesaver for avoiding clipping. It's a great pick for those who need precise signal management in a tight space.
PROS
  • • Joranalogue's precision engineering ensures accurate signal summation.
  • • Dual configuration offers flexibility for both additive and averaging needs.
  • • Extremely compact 2HP footprint saves valuable rack space.
  • • Averaging mode gracefully handles hot signals, preventing unwanted distortion.
CONS
  • • 2HP size limits input/output connectivity options significantly.
  • • Limited functionality compared to more complex mixing modules.
  • • Requires careful power planning due to its current draw.
1.5/5 AudioFu Score
Specs:
6/10
Detail:
3/10
Value:
9/10

How to Choose the Best Various Modules

1

Noise Floor

Low noise is crucial. A noisy module will bury your signal, especially when stacking effects. We're listening for hiss, hum, and any unwanted artifacts - a clean signal is the foundation for everything else.

2

Voltage Range & Tracking

Modules need to reliably respond to control voltages. Poor tracking means your filters won't tune properly, your VCAs will be uneven, and your modulation will be unpredictable. We're checking if the module consistently responds across the 0-5V range.

3

Build Quality

Let's be real, $100 isn't going to buy you aerospace-grade components. But flimsy pots, loose jacks, and cheap PCBs are a recipe for disaster onstage. We're looking for something that won't fall apart after a few gigs.

4

Signal Integrity

This is about how 'clean' the signal remains as it passes through the module. Does it introduce unwanted coloration or distortion? Does it maintain the dynamics of the original signal? A cheap attenuator can suck the life out of a patch.

5

Utility & Flexibility

Modules at this price point need to earn their place. Are they versatile enough to handle multiple patching scenarios? Can they be used for more than just one specific task? A module that can do multiple jobs is worth its weight in gold.

Buying Guide

At this price, you're making trade-offs. Expect plastic enclosures, potentially slightly looser pots, and maybe a bit more noise than a high-end module. Don't expect pristine audio - focus on functionality and creative potential. It's better to have a few solid utility modules than one 'amazing' but ultimately limiting module.

How This List Is Built

We don't play these instruments — we're a catalog, not a review desk, and we'd rather say so than pretend otherwise. This page ranks 15 various modules from the Thomann catalogue, which is the largest single source of specification data in this category.

Position is computed, not curated. Four signals, in order of weight: how completely the manufacturer documents the instrument (number of published specifications), where it sits in the price range, how specific the model designation is — which filters out generic accessories — and whether a product image exists. The same inputs always produce the same order, so nothing here is shuffled to look fresh.

What this list is good for: narrowing a category down to a shortlist by spec and budget. What it isn't: a substitute for hearing an instrument. Before you buy, read hands-on reviews and, where you can, play it. Full methodology.

Frequently Asked Questions

No, obviously not. They'll be good enough to get you patching, but you'll hear the difference in noise, tracking, and overall sonic polish. Think of them as stepping stones - learn the basics, then upgrade later.
Absolutely, but be mindful of noise. A noisy module can be a real problem when you're trying to cut through a loud mix. Test your patches thoroughly before hitting the stage.
Pay attention to current draw. These modules typically draw between 10-30mA. Make sure your power supply can handle the load, or you'll be dealing with voltage droop and unpredictable behavior.
Most likely not easily. Component availability can be an issue, and schematics are often scarce. Treat them with care, and consider them disposable if something goes wrong.
Multi-module panels can be a great way to save space and money, but the individual modules are often lower quality. Carefully research the panel's modules before committing - sometimes it's better to buy a few carefully selected individual modules.

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