Shakmat Modular SumDif
Prices include 21% VAT based on your delivery country (Netherlands).
Price without VAT: €71,90
EU businesses outside the Netherlands can purchase with 0% VAT using a valid EU VAT number.
VAT is automatically removed after VAT validation during checkout.
Overview & Tech Specs
Overview & Tech Specs
Compact. Clear. Capable.
The Shakmat SumDif is a versatile 2HP dual adder and differentiator designed for both CV and audio tasks. Whether you're mixing voltages, inverting signals, or venturing into Mid/Side audio processing, SumDif delivers sharp accuracy with a minimal footprint.
Each channel handles A+B and A–B operations, allowing use as a unity mixer, buffered multiple, or inverter. With precision signal handling and support for V/oct signals, it's a trusted tool for modulation and pitch duties alike. Rear jumpers allow optional -6dB attenuation for refined output control.
Features
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Dual adder/differentiator for CV and audio signals
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Simultaneous A+B (sum) and A–B (difference) outputs
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Functions as a unity mixer, signal inverter, or buffered multiple
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Mid/Side audio processing ready
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-6dB output attenuation via rear jumpers
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Skiff-friendly design (29mm deep)
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V/oct accurate signal handling
Technical Specifications
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Width: 2HP
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Depth: 29mm
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Power consumption: +12V: 15mA, -12V: 15mA
Applications
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CV signal routing and conditioning
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Mid/Side processing in audio chains
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Pitch signal mixing and inversion
Small module, maximum impact.
Delivery & Returns
Delivery & Returns
Delivery timing depends on the product’s availability status:
- In Store
Available at our Rotterdam store and shipped the same day when ordered before 15:00. - In Warehouse
Available from our warehouse. The estimated dispatch or delivery timeframe is shown next to the product availability. - For Backorder
The product can be ordered, but availability and delivery timing may vary. Please contact our team for product-specific information. - Pre-Order
The product is not yet available for immediate dispatch. Please contact our team for the latest expected availability date.
All available shipping methods, costs and estimated delivery times are shown at checkout.
Returns
Eligible unused products can be returned within 14 days of delivery. Products must be returned in their original condition, including all accessories and original packaging.
Some exclusions may apply, including opened software or custom orders. Please contact us before returning an item so we can provide the correct instructions.
If your order arrives damaged or incorrect, contact us as soon as possible with photos of the product and packaging. We’ll help arrange the appropriate replacement, repair or refund.
Warranty & Support
Warranty & Support
All new products include a 2-year warranty.
If you experience a fault, contact our team with your order number and a description of the issue. We’ll help troubleshoot the problem and, where necessary, arrange a repair, replacement or warranty claim.
The warranty does not cover accidental damage, misuse, normal wear and tear, incorrect installation or unauthorised repairs.
Reliable and trackable delivery with leading carriers.
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