AudioFuAudioFu Chart · October 2026
Best Frap Tools Mixer, Attenuator Modules 2026
The top pick is Frap Tools CGM Creative Mixer Series - QSC Stereo Channel ($223). Frap Tools 333 - ProAudio Sum & Distribution gives you the most for the money at $119. Frap Tools CGM Quad Stereo Channel leads the high end. Ranked by the AudioFu Index from 5 models, 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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Frap Tools CGM Creative Mixer Series - QSC Stereo Channel
CGM Stereo Channel · Frap Tools
7 for sale on Reverb1 finish at Thomann
The Frap CGM Stereo Channel is a seriously useful addition to any Creative Mixer system, or even standalone. It’s a compact powerhouse for shaping your stereo image with CV control, perfect for experimental electronic musicians and those wanting precise control over their signal flow without excessive complexity.
Pros
- Excellent stereo imaging control via panorama/crossfade.
- Robust build quality; Frap's known for solid construction.
- Flexible aux sends offer pre/post routing options.
Cons
- 6 TE width can be restrictive in smaller modular setups.
- Limited EQ capabilities; purely a gain/level/pan module.
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The Frap 333 is a seriously useful little utility module for any Eurorack setup. It’s a clean and efficient way to distribute signals or attenuate them, and the DC coupling makes it incredibly versatile for both audio and CV routing. This is perfect for intermediate to advanced users looking for reliable signal management without breaking the bank.
Pros
- Excellent buffering prevents signal degradation in complex patches
- DC coupling handles both audio and CV signals seamlessly
- Compact 6 TE width saves valuable panel space
Cons
- Power draw, while not excessive, can strain smaller power supplies
- Attenuators are fixed at -6dB, lacking finer adjustment
46AudioFu
IndexStableno change since Aug 14Aug 14$119 now$119€106 at Thomann · in stockCheck price ↗ -
Frap Tools CGM Creative Mixer Series - G Group
CGM Group · Frap Tools
2 for sale on Reverb1 finish at Thomann
The CGM Group is a solid, no-frills solution for managing multiple channels in your modular system. It's perfect for experimental sound designers or anyone building complex patch environments needing clean summing and flexible effects routing—a real workhorse for serious patching.
Pros
- Excellent channel summing for complex modular patches.
- Clean gain staging prevents muddiness in group signals.
- Flexible effect routing expands sonic possibilities.
Cons
- Limited to eight channels – scaling up requires multiple units.
- Frap Tools' aesthetic isn't for everyone; utilitarian design.
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The Frap Tools CGM Quad Stereo Channel is a seriously well-engineered mixer module. It’s perfect for those building larger, more complex modular systems who need precise control and flexible routing—especially if you're already invested in the CGM ecosystem. The CV control is a real highlight, allowing for incredibly dynamic and evolving mixes.
Pros
- Exceptional build quality with robust metal chassis and tight tolerances
- Flexible aux sends offer extensive routing possibilities for complex signal chains
- CV control over multiple parameters unlocks expressive, dynamic mixing
Cons
- 18HP footprint can be restrictive in smaller modular setups
- Power draw is relatively high, demanding a powerful PSU
36AudioFu
IndexStableno change since Aug 14Aug 14$592 now$592€529 at Thomann · in stockCheck price ↗ -
Frap Tools CGM Creative Mixer Series - I Insert
CGM I (Insert) · Frap Tools
1 for sale on Reverb1 finish at Thomann
The CGM I Insert is a clever little module for CGM users looking to add some serious effects processing flexibility. It’s brilliant for those who want to experiment with parallel and serial effects chains without a ton of extra patching. If you’re already invested in the CGM system, this is a no-brainer for expanding your sonic palette.
Pros
- Flexible routing offers unique stereo effects chains.
- Compact 6HP footprint maximizes valuable rack space.
- Three-stage switching provides precise level control.
Cons
- Limited to CGM system; standalone use is impossible.
- 38mm depth may pose challenges in shallow racks.
How to choose the best mixer, attenuator modules
Transparency
Frap Tools modules are renowned for their neutrality. They don't impart any noticeable coloration to your signal, which is huge when you're building complex patches where you want to hear the character of your oscillators and filters, not the mixer. This isn't a 'warm' or 'vintage' vibe - it's clean, letting your sources shine.
Build Quality
The metal is thick, the pots are smooth and don't wobble, and the jacks feel secure. This isn't some flimsy DIY project - it's a module you'll trust to survive a gig in a crowded club. The robust construction inspires confidence, something you don't always get with cheaper options.
Attenuation Accuracy
The attenuators are precise and consistent. This is vital for nuanced modulation - subtle changes in signal level can make a massive difference in the overall sound. You're not going to get unpredictable behavior or unwanted distortion from imprecise attenuation.
Layout & Ergonomics
Frap Tools prioritizes a functional, no-nonsense layout. Everything is clearly labeled, and the knob placement is logical, making patching and tweaking a breeze, even in a complex system. It's not about aesthetics; it's about efficient workflow.
Power Consumption
These modules are power-efficient. In a modular system, every milliamp counts, and Frap Tools' designs keep power draw reasonable, allowing you to fit more modules into your system without stressing your power supply.
Buying guide
Alright, so you're diving into the modular rabbit hole and need a solid mixer and attenuator setup? Frap Tools has quietly become a go-to for serious modular users, and for good reason. Their modules aren't flashy, but they're rock-solid, transparent, and just work - a crucial thing when you're trying to coax something beautiful out of a chaotic patch. Let's break down what makes Frap Tools' mixer and attenuator modules worth a look, especially if you're past the toy stage and chasing real sonic depth.
Frap Tools modules aren't the cheapest on the market, and you're paying for that reliability and transparency. Don't expect a lot of bells and whistles - they're focused on core functionality, done exceptionally well. If you're just starting out and experimenting, there are more budget-friendly options, but if you're serious about modular synthesis and want a mixer/attenuator that will last and sound great, Frap Tools is a solid investment.
Be prepared to hunt - they are often out of stock and command a premium on the used market.
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 mixer, attenuator modules from the Thomann catalogue (of 96 in the category). 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 Frap Tools modules Eurorack compatible?
Absolutely. They're designed specifically for Eurorack format and use the standard panel size and power requirements.
Do they sound 'sterile'?
Not at all. 'Transparent' doesn't mean 'lifeless.' It means they don't add their own character. You'll hear everything your sources are doing, both the good and the bad. That's a strength, not a weakness.
Are Frap Tools modules easy to find?
They're becoming increasingly difficult to source new. Frap Tools doesn't have a massive distribution network, so you'll often find them on Reverb or eBay, and prices can be inflated.
Can I use Frap Tools attenuators for modulation?
Definitely. Their accuracy makes them ideal for precise modulation control - everything from subtle volume swells to complex rhythmic patterns.
What's the difference between a Frap Tools mixer and a typical mixer?
The biggest difference is the lack of added coloration. Many mixers add a subtle EQ curve or saturation. Frap Tools aims for a completely flat response, so you hear exactly what you put in.
