This Module is currently available.
Dual Sample and Hold
DS&H uses the tried and tested LF398 sample and hold amplifier - both channels are independent of each other and are configured such that 5V+ on the trigger will 'sample', with ground being 'hold'. If you want to get the classic stepped bleepy random voltages then you need a noise source too ..
As with most of my other modules, the panel is made from laser-cut 3mm perspex, suitably engraved.
http://www.yorkmodular.co.uk/utility-modules/4hp-dual-sample-and-hold-for-eurorack-synthesisers