Angle Grinder from Schlappi is an 18hp quadrature sine wave oscillator, filter, and distortion.

• Quadrature Sine wave VCO with four phase related outputs: 0°, 90°, 180°, 270°
• HIGH range from 10Hz to over 20kHz
• LOW range from 0.3Hz to over 500Hz
• Tracks 4+ octaves of volts per octave at the V/OCT input
• FM1 is selectable linear or exponential FM via jumper on back
• FM2 is additional exponential V/OCT jack
• With no input GRIND section provides voltage controlled harmonic content
• With input GRIND section compares each phase against GRIND IN signal
• Each slider subtracts the compared signal from the input signal, creating complex waveshapes
• When GRIND is fed into the SPIN section the outputs become a state variable filter
• DAMPING counteracts the oscillation and allows an external signal through
• When filtering the four phase related outputs are: LOW PASS, BAND PASS, HIGH PASS, and INVERTED BAND PASS
• When filtering the GRIND section is a nonlinear feedback network for harsh and unpredictable timbres
• The four phase feedback paths can be separately voltage controlled
• The INJECT jack can be used as a second input for either audio or CV, bypassing GRIND
• All analog OTA based design
• 18 HP
• Power requirements :+12V 81mA, -12V 78mA

Video: https://youtu.be/1IOWKF97WYY

Product Specs

• Item Number: 16666
• Make: Schlappi Engineering
• Model: Angle Grinder - Silver
• Condition: Brand New
• Finish: Silver
• Categories: keyboards-and-synths ⇒ eurorack
• Function: Filter Oscillator Waveshaper Distortion
• Made In: United States
• MPN: SE_Ang_Grind_Silver
• Modular Grid: Eurorack ⓘ ＋
• Dimensions*: 18 HP 27 mm deep
• Power*: 81 mA +12V 78 mA -12V 0 mA 5V

* User contributed details