AudioFu Chart · November 2026
Best Doepfer Ring Modulator, Crossfade Modules 2026
The top pick is Doepfer A-114 Dual Ring Modulator ($86). Ranked by the AudioFu Index from 5 models, prices checked every night.
Last updated: November 4, 2026
Top 5
Full detail for the 5 highest AudioFu Index scores. Every other model is listed below.
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If you build a modular rig, this module gives you two ring modulators in one 4TE panel. It multiplies two signals together and handles both positive and negative voltages, which is what sets it apart from a VCA. It suits you if you want bell-like sounds or speech alienation, and you will need a supply that provides 12V and -12V.
Pros
- Contains two separate ring modulators in one module
- Multiplies two inputs, X * Y, to produce the output
- Handles both positive and negative input voltages (4-quadrant multiplication)
Cons
- Needs 12V and -12V power, drawing 40mA and -30mA
- Takes 4TE of rack width and 40 mm of depth
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Doepfer A-138b "EXP" Mixer with Logarithmic Pots
A-138D · Doepfer
7 for sale on Reverb1 finish at Thomann
You might like this module if you build a modular rig and want to blend two signals together. It also works as an insert, so you can run an external effect through it. Its small size and low power draw make it an easy fit for a Euro rack.
Pros
- Works as a crossfader that blends between two signals in one module
- Can also sit inside a signal path as an insert for external effects
- Compact 8 HP width fits easily into a Euro rack format
Cons
- Only 8 HP wide and 40 mm deep, so it needs rack space to fit
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You get a small module that fades between signals, and it works with both audio and control voltage. It suits you if you build a modular rig and want a compact way to crossfade sounds. It takes up little space and draws little power, so it works well for builders with a tight case.
Pros
- Crossfades audio signals as well as CV signals under voltage control
- Dual VC design gives two voltage-controlled crossfade channels in one module
- Compact 4 HP width fits into a modular case with limited space
Cons
- Only 4 HP wide and 45 mm deep, so your case needs room to fit it
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This is a small Eurorack module that does two jobs. It turns triangle waves into sine waves, and it can blend two signals using a control voltage. It suits you if you build a modular setup and want a module that takes up little space.
Pros
- Combines two functions in one compact module: sine converter and VC crossfader.
- Converts triangle waves to sine waves.
- Voltage-controlled crossfader lets you blend two signals with a control voltage.
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You get a voltage-controlled panning module with two VCAs that work in opposite directions. It can pan a sound between left and right, pan between two audio signals, or do both at once. It suits you if you already run a modular synth and want to move sounds around with an LFO, envelope, or other control source.
Pros
- Two linear VCAs that move in opposite directions under one control voltage
- Three audio outputs: VCA1, VCA2, and a Mix output
- Manual panning plus two external control voltages, one with an attenuator
Cons
- Works with control sources like LFOs and envelopes, which you must supply separately
How to choose the best ring modulator, crossfade modules
Heritage & Design
Doepfer was a foundational brand in Eurorack, and their modules reflect that - functional, no-frills, and built around a core set of design principles. This isn't about flashy aesthetics; it's about reliable performance and a certain sonic signature.
Ring Modulator Tone
That Doepfer ring mod isn't super-aggressive or harsh. It's more about adding a metallic edge, a subtle phasing effect, or a really interesting harmonic complexity. It's not going to give you ice-pick distortion, but it'll add a character that cuts through a dense mix without being abrasive - great for leads or adding texture to pads.
Crossfade Character
The Doepfer crossfade isn't perfectly linear. It has a slight curve that gives it a unique feel - a bit smoother than some other designs. This subtle non-linearity can be used to create evolving textures and interesting rhythmic patterns, especially when modulating it with LFOs.
Build Quality & Reliability
These modules are built like tanks. The PCBs are thick, the jacks are solid, and the pots feel good. They've been gigging for years and holding up incredibly well - a testament to their robust construction. You're not getting a fragile boutique piece here.
Eurorack Compatibility
Doepfer modules are standard 3U Eurorack format, which is a huge advantage. While they're older designs, their compatibility means they integrate seamlessly into modern modular systems, bridging the gap between vintage inspiration and contemporary workflows.
Buying guide
Alright, let's talk Doepfer ring modulators and crossfades - essential tools for weirding out your synths. If you're serious about modular and want that classic, slightly gritty Eurorack vibe, Doepfer is where you should be looking. They're not the flashiest, but they're rock solid and deliver a characteristic sound that's instantly recognizable - a bit like the vintage Moogs they were often emulating back in the day.
Look, Doepfer modules aren't the cheapest on the market, especially now that they're mostly secondhand. But you're paying for that heritage, the reliable build, and that specific Doepfer tone. Don't expect a ton of features or fancy displays - these are workhorses, not toys.
Inspect the pots for scratchiness when buying used; that's the most common wear point.
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 6 ring modulator, crossfade modules from the Thomann catalogue (of 10 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 Doepfer modules still being made?
No, Doepfer largely ceased production a while back. You'll almost exclusively find them on the used market - Reverb, Muff Wiggler, etc.
How do Doepfer ring modulators compare to Mutable Instruments' Ring Mod?
The Mutable Instruments Ring Mod is more aggressive and versatile, offering more modulation options. The Doepfer is subtler, more 'classic,' and a bit warmer - a good choice if you want a less intense metallic edge.
What's the best use case for a Doepfer crossfade?
Blending two oscillators for evolving tones, creating rhythmic gating effects, or subtly morphing between different filter settings. It's a surprisingly versatile module for something so simple.
Are Doepfer modules noisy?
Like most analog modules, they have a bit of inherent noise, but it's generally well-managed. It's not a dealbreaker, but be aware that you're not getting the absolute cleanest signal path.
Can I use these modules in a DAW?
Absolutely, but you'll need a Eurorack interface to connect them to your computer. They're designed to be part of a modular system, but their audio outputs can be routed to a DAW for recording.
