Schlappi Engineering BTFLD Black

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Schlappi Engineering BTFLD Black

Schlappi Engineering

BTFLD Black

5 Expert Rating

Product Info

Article Number: 603048
Model: BTFLD Black
Price: $273.90

* Prices may vary. Check retailer for current pricing and availability.

The BTFLD Black is a seriously quirky module for sound designers and experimental musicians. Its 4-bit conversion and wavefolding circuit create unpredictable, gritty textures that are perfect for adding character to drones, percussion, or even basslines. It’s a fantastic way to inject some chaos into your modular system.

Product Description

  • Schlappi Engineering BTFLD Black
  • Eurorack Module
  • Distortion
  • wave folder and asynchronous 4-bit analogue-digital converter
  • 6 Outputs
  • Wave folding circuit
  • Switched range for bipolar audio signals or unipolar modulation signals
  • Acts as a distorter/wave folder or a rhythm generator
  • depending on the input
  • 4-Bit binary output with interfaces to other logic modules
  • LED display for each input and output
  • Width: 6 HP
PROS
  • • Unique 4-bit digital conversion creates complex, evolving textures.
  • • Wave folding circuit delivers rich harmonic distortion and character.
  • • Versatile operation – distortion, wavefolder, or rhythm generator.
  • • Compact 6HP footprint maximizes space in crowded modular racks.
CONS
  • • Limited control over individual output levels – can be overwhelming.
  • • 4-bit output might feel restrictive for some advanced modulation tasks.
  • • Requires careful input level management to avoid clipping or unwanted noise.

Product Video

Key Features

Type Waveshaper/Distortion/Rhythm Generator Module
Controls Switched range for bipolar/unipolar signals, Input Level
HP Width 6
Depth Approximately 25mm (standard Eurorack depth)
Power Draw Approximately +12V: 40mA, -12V: 0mA
CV Inputs One CV input for range switching

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Frequently Asked Questions

By manipulating the input signal, the module's 4-bit conversion creates stepped outputs that can be used to trigger or modulate other modules, effectively generating rhythmic patterns.
It's a switched range, meaning it drastically alters the signal's behavior – unipolar produces a more predictable wavefolding effect, while bipolar introduces more complex interaction and potential for self-oscillation.
While the Happy Ending is a smoother, more traditional wavefolder, the BTFLD Black's 4-bit conversion introduces a digital grit and unpredictable character that’s quite different – it's less about subtle shaping, more about generating unique textures.

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