Mu-tron Bi-phase Double Foot Switch Japanese String The diode ladder filter is

The diode ladder filter is a great 303 style filter

The amp's not a museum piece by any standards: it's a stunning player's amp that has plenty of Mojo

This is a rare 240v mains-powered distortion/phaser

STUDIO MODELER FEATURES: 24-bit processing and A/D/A conversion 99 User definable programs MIDI Clock Sync Tap Tempo Innovative Tempo controls translate between seconds and BPM Musical note variations for rhythmic freedom XLR (balanced) and 1/4 inch (unbalanced) Inputs and Outputs MIDI in and software selectable MIDI out/thru Input/Output Level controls A variety of mix options

Mu-tron Bi-phase Double Foot Switch Japanese String The diode ladder filter isOriginal Bi phase switch. Tested and working.