5-way Switch Controlled Precision Adder

Width: 12 HP / 2 Tile Units
Depth: 45mm (1.78″)
Power cable: Tile Tail (3-pin)
Power +12V: 15mA
Power -12V: 5mA

1U Tile Specs



The Selecter is a precision adder using a 5-way switch to choose the desired output. The output can be any one of the three inputs “A”, “B”, “C” or the summation of “A+B” or “B+C”. When the “A” or “C” inputs are not patched, a voltage of -1V and +1V will be applied to their inputs respectively. This way the Selecter can be used to shift a CV sequence inserted into the “B” jack down an octave “A+B” or up an octave “B+C”. The Selecter uses precision Op Amps, 0.1% resistors and an Oak Grigsby 5-way switch and will typically maintain accuracy of +/-0.001V.