The instrument
The Roland SBF-325 is an analogue flanger which was in production from 1979 to 1986 and offers mono flanger, stereo flanger, cross-mix flanger and chorus.
Details
The SBF-325 offers four controls for feedback, centre frequency, modulation rate and modulation depth, an effect mode switch for selecting the three flanger modes and the chorus mode or an off as well as three invert switches for setting an analogue equivalent to various flanger algorithms in combination with the other controls.