Robin Gareus http://gareus.org/
9 Pedalboards using it

Stereo X-Fade

Plugin screenshot

A stereo crossfade plugin

Control Default Min Max
Signal A/B 0.00 -1.00 1.00
Shape 0.00 0.00 1.00
Mode 0 0 1
http://gareus.org/oss/lv2/xfade v.1:516.0-5