Shakmat Modular SumDif
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Shakmat Modular
SumDif
Product Info
* Prices may vary. Check retailer for current pricing and availability.
The SumDif is a surprisingly useful little module for basic signal manipulation. It’s a great entry point for understanding modular logic and perfect for experimental sound design or CV processing where simple math is your goal. It's a solid, no-frills option for those building a budget-friendly Eurorack system.
Product Description
- Shakmat Modular SumDif
- Eurorack Module
- Dual adder / differentiator
- 2 Inputs per channel
- sum and difference output
- Suitable for audio and CV signals
- Current consumption: 15 mA (+12 V) / 15 mA (-12 V)
- Width: 2 TE
- Depth: 40 mm
PROS
- • Excellent value for basic arithmetic operations.
- • Compact 2TE form factor saves precious panel space.
- • Clean summing and differentiation with minimal noise.
- • Solid Shakmat build quality – feels robust and reliable.
CONS
- • Limited functionality compared to more complex logic modules.
- • 15mA draw can add up in power-hungry racks.
- • No attenuators, limiting dynamic control range.
Product Video
Key Features
Functions
Dual adder/differentiator, Sum & Difference Outputs
Inputs
2 per channel (audio/CV)
HP Width
2 TE
Depth
40 mm
Power Draw
15 mA (+12V) / 15 mA (-12V)
Outputs
Sum and Difference per channel
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Frequently Asked Questions
It's quite clean for the price point, but expect a slight hiss at higher signal levels – typical for analog circuits.
While technically possible, its limited functionality makes it less ideal than dedicated mixing modules; it’s better suited for CV or experimental audio processing.
The differentiation is accurate within a reasonable frequency range, but high-frequency signals will exhibit some attenuation and potential distortion.
