3.5mm stereo plug to 6.3mm stereo jack FEV-B115By gerry / February 21, 2021 3.5mm stereo plug to 6.3mm stereo jack FEV-B115A. 3.5mm stereo plug to 6.3mm mono jack;B. 3.5mm stereo plug to 6.3mm stereo jackA. 3.5mm stereo plug to 6.3mm mono jack; B. 3.5mm stereo plug to 6.3mm stereo jack