thru&hold sample&hold bidirectional switch

This module has 10 circuits: 4 thru&hold, 4 sample&hold and two bidirectional switches.
The thru&H and S&H all work off the same CV signals (or noise or whatever else applied to the input) but each stage is independently gate controlled.
The bidirectional switches are, of course, inspired by the early Serge modules of the same name and have the same functionality. Either feed an input signal and use a gate to choose whether the input goes to output A or B, or feed two input signals into A and B, then use a gate to decide which gets fed to the output. This design differs from the Serge (which uses 4007 CMOS) as it uses DG411 analogue switches and can pass any signal between +/-12V. It can also operate at audio frequencies so some fun can be had using 3 audio signals to switch between each other.