And Gate

Quad and gate based on cmos IC.

Quad And Gate / Logic Gate
The core circuitry is based on a 4081 and logic chip. Very simple to build. IT has 4 pairs of gate inputs with 4 individual gate outputs. The gate output of the 1st pair is connected to the 1st input of the 2nd pair via switched jack. Inserting a jack into 1st input of the 2nd pair will overwrite this connection. Output of the 2nd pair is also connected to the 1st input of the 3rd pair and output of the 3rd pair is connected to the 1st input of the 4th pair the same way.
Front panel is also made out of PCB and screen printed by hand.

https://bio.link/gurugarasynth