Enclosure: Pactec #KEU-10
Phone jack: Switchcraft #11
Banana jack: Johnson/Emerson #108-09xx-001
Rocker switch: Cherry #SRB22A2GBBNN
Rocker switch: Cherry #SRB24A2HBBNN
Pushbutton switch: Mouser #103-1211
Battery holder: Bulgin #BX0023
DIN jack: Singatron #YE-1365A
LED holder: Lumex #SSH-LX5091 (for 5mm LED)
Potentiometer: Alpha #RV16A-10-15K-A1M
Knob: Mouser #450-7618