Elby Designs - ES84 Peak & Trough (Banana Format)
*EUROSERGE - 4MM BANANA JACKS*
The PEAK section compares the inputs at [PEAK 1] - [PEAK 4] against each other and the [MANUAL PEAK] control, and outputs the highest voltage.
In a similar vain, the TROUGH section outputs the lowest voltage of the inputs [TROUGH 1] - [TROUGH 4] and the [MANUAL TROUGH] control.
Both sections can be used to combine waveforms, CVs or envelopes in unexpected ways while the PEAK section is often used for combining gates from a sequencer.
Both the PEAK and TROUGH operate with input volatges in the range of 0V to ~5.6V, though in practice, you may find the TROUGH section does respond to input voltages going a volt or two below 0V.