Schlappi Engineering Boundary
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Schlappi Engineering
Boundary
Product Info
Article Number:
535295
Brand:
Schlappi Engineering
Model:
Boundary
Category:
Envelope Modules
Price:
$261.80
* Prices may vary. Check retailer for current pricing and availability.
The Schlappi Boundary is an absolute beast of a module – seriously packed with functionality. It’s perfect for experimental sound designers and those who want a versatile envelope generator and VCA combo in a relatively compact space, but be prepared to spend some time mastering it. It’s a real value for the sonic possibilities it unlocks.
Product Description
- Schlappi Engineering Boundary
- Eurorack Module
- Flexible function generator with VCA
- Possible applications: AD or ASR envelope
- oscillator
- frequency divider
- wave shaper
- envelope follower
- ring modulator
- VCA and more
- Attack and decay time (rise / fall) separately adjustable and each controllable via CV input
- Adjustable characteristic curve for rise and fall segment
- Switchable cycle mode
- VCA / four-quadrant multiplier with adjustable bias and CV input with attenuator
- Rectify input (rectifier)
- Bound input for generating "bouncing ball" envelopes
- Inputs for trigger
- slew
- rise CV and fall CV
- EOR and signal output for function generator
- Signal input/output and 2 CV inputs for VCA section
- Current consumption: 112 mA (+12 V) / 59 mA (-12 V)
- Width: 12 TE
- Depth: 25 mm
PROS
- • Remarkable flexibility for a module of its size, truly a Swiss Army knife.
- • Bound input creates unique, bouncing envelope shapes, adding sonic character.
- • Individually controllable attack and decay times offer precise envelope shaping.
- • The VCA section's bias control allows for nuanced amplitude modulation.
CONS
- • 12 TE width can be limiting in smaller Eurorack cases.
- • Steep learning curve given the module's complexity and multiple functions.
- • Limited number of CV outputs for a module with so many functions.
Product Video
Key Features
Type
Function Generator / Envelope Module
Stages
AD/ASR
HP Width
12
Depth
25 mm
Power Draw
171 mA
CV Outputs
2
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Frequently Asked Questions
The Bound input creates a 'bouncing' envelope, where the output oscillates around a target value before settling, great for percussive or glitchy effects.
Yes, the VCA section is fully functional and can be used independently; the attenuator allows for precise control over the CV signal.
It's more of a wave shaper – it alters the waveform’s character rather than a complex wavefolding effect, adding subtle harmonics and grit.
