3.5mm stereo plug to 6.3mm stereo jack FEV-B112By gerry / February 21, 2021 3.5mm stereo plug to 6.3mm stereo jack FEV-B112A. 3.5mm stereo plug to 6.3mm stereo jack;B. 3.5mm stereo plug to 6.3mm mono jackA. 3.5mm stereo plug to 6.3mm stereo jack; B. 3.5mm stereo plug to 6.3mm mono jack