The instrument
The Rocktron ProRack MX3 is a half-rack size units with Delay, Chorus, Flanger all in one.
Details
The control functions are: adjust control, source control, waveform push button switch(rounded or triangle wave), rate, depth, regeneration, mix(dry/effect), range control, input jack, two output jacks- excellent for running this unit in stereo between two separate amps to get a 3-dimensional delay for guitar, vocals, bass or keyboards, footswtch jack- any standard footswitch will turn this unit on/off.