Intellijel Switched Mult 1U ES175 both of which are military

both of which are military surplus tubes used in avionics

the BD909 is an identical recreation of the original all-analog drum circuit of the TR-909

Scott Henderson 8/2022:

The JFET type is a clean boost that subtly beefs up your signal with the dynamics and responsiveness created from the JFET front end

giving you the sound signature that can only be created by a true analog VCO

Intellijel Switched Mult 1U ES175 both of which are militaryChainable, Passive Switched Multiplier Switched Mult 1U is an expandable, dual bus, 6 jack passive signal multiplier, with a 3 position switch to facilitate asymmetrical routings enabling each jack to be a mult of the X bus; a mult of the Y bus; or to be turned off entirely.