Befaco Atte
At 4 HP, it tucks into tight systems like a secret handshake—small, but wired for serious signal control.
Overview
The Befaco Atte is a Eurorack modular synthesizer module designed as a compact, multi-role utility for audio and CV signal manipulation. Despite its minimal footprint, it packs four fully functional channels, each serving as an attenuator, inverter, splitter, and offset generator. Owners report it excels in patch simplification and signal routing, particularly in dense systems where space is at a premium. Its design allows for cascading inputs, meaning a single source can feed multiple channels without external mults, streamlining complex patches. The module is reversible per channel—users can assign input or output direction as needed—adding to its flexibility in dynamic setups.
While it doesn’t generate sound, the Atte shapes how signals behave across a system. It handles both audio and control voltages with equal competence, making it useful for modulating parameters or balancing stereo outputs. Collectors note its presence in utility-heavy builds, where precise level control and inversion are routine needs. The module’s value lies not in flash or novelty, but in its quiet reliability and thoughtful layout. It’s the kind of module that disappears into a system—until you realize you’re using it in every patch.
Specifications
| Manufacturer | Befaco |
| Format | Eurorack modular synthesizer format |
| Module Width | 4 HP |
| Module Depth | 25 mm |
| Power Consumption | +12V, 60 mA |
| Power Consumption | –12V, 50 mA |
| Channels | Four-channel |
| Function | attenuator, inverter, splitter and offset generator |
| Normalling | The input of each channel is normalled to the next channel |
Key Features
Cascading/Normalled Inputs
The input of each channel is normalled to the next, forming a daisy-chained signal path. This means a single source plugged into the first input automatically feeds into the following three channels unless overridden by a patch cable. According to available documentation, this design reduces the need for external mults and simplifies distribution of control voltages or audio signals. Users on MOD WIGGLER note this configuration is uncommon and appreciated, calling it a time-saver in live patching scenarios.
Four-Channel Reversible Design
Each of the four channels can be used independently and reversibly for input or output. This flexibility allows the Atte to function as a bidirectional signal router. For example, a user could send one signal through all four attenuverters in parallel, or route four separate sources into the module and sum or offset them individually. The channel independence, confirmed by Synthesizer.gr, makes it adaptable beyond typical attenuator roles—particularly in feedback loops or multi-stage modulation paths.
Quad Attenuator/Inverter with Offset Generation
The module integrates attenuation, inversion, and offset generation into each channel. Each section reportedly includes controls for adjusting signal level (attenuation), inverting polarity (attenuverter function), and applying a fixed offset between 0 to +10 V or –10 to 0 V. This combination allows precise shaping of CV sources—for instance, converting a unipolar LFO into a bipolar one, or biasing a random voltage into a usable pitch range. The offset generators are built per channel, adding to the module’s self-contained utility.
Collectibility & Value
The Befaco Atte has maintained a modest but stable presence in the used market. A June 2025 listing on MOD WIGGLER reported a used price of $75. New units have varied in pricing across retailers: Thomann lists the module at €95, while Perfect Circuit offers a version labeled "Befaco Atte V2 Quad Attenuverter" for $120.00. Thomann’s own new listing prices it at $92, suggesting potential regional or version-based discrepancies. No original MSRP or production timeline is documented, and there is no evidence of widespread failure or service issues. Its collectibility remains functional rather than nostalgic—owners value it for utility, not rarity.
eBay Listings
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