The RotoSIM is a great Leslie speaker simulation with two speeds and separate levels for the bass and tweeter. Output A is designed to sound slightly different than Output B. Output A is a little more transparent and truer sounding.Output B is deeper and thicker sounding. Definitely experiment with both outputs while the instrument is plugged into IN A (this also gives a nicer stereo sound spread when used in stereo).
This RotoSIM is minty fresh! It's been very, very lightly used. It includes the original box, power supply, and manual. We will ship this beauty out lightning fast the next day.