The Add1’s adders respectively comparators come equipped with three signal inputs, an output and a switch for choosing the mode of operation. Thanks to high quality components and much attention to detail, the module can even be used for demanding tasks such as processing pitch control voltages. The input resistance is 100kΩ.
While in adder mode, each circuit can sum up to three signals with an amplification factor of 1.0. By feeding the same material to several inputs, it is possible to achieve amplification factors of 2.0 or 3.0. The maximum output voltage, which can be emitted by the module without distortion, is approximately ±10,5V.
Employed as comparators, the Add1’s circuits send out a voltage of +5 V, as long as the sum of incoming audio and / or CV material is positive. If the results are negative, a voltage of -5 V is emitted. In other words, the circuits generate pulse waves with variable width. It is worth mentioning that the threshold is not exactly 0 V. To avoid fluctuations, which can be introduced by noise and such, a small offset (±50mV) was added.
Per adder / comparator:
Three signal inputs, one output
3U Eurorack module, 6 HP wide, 30 mm deep
Power consumption: 20 mA at +12 V and 20 mA at -12 V