I hardly used it after purchasing it new. Simple AB/Y switcher. The OBNE AB/Y Switcher is a simple switcher that switches signal routing with AB/Y. It doesn't have luxurious or revolutionary features, and is limited to only the necessary functions. You can switch the output to A, B, or A+B with the footswitch. For example, it can be used conveniently, especially in live performances, such as switching between two amplifiers instantly.