JHS Pedals love a clever little pedal. The A/B/Y is a super simple and reliable switcher you can use to send your instrument signal to two outputs, either singularly or simultaneously on the go.
Just plug your instrument cable into the input and choose where the signal path goes next.
Use the left footswitch to change between A and B channels, with the right footswitch engaging both channels for stereo output. Great if you plan on using guitar or synth effects that deliver across stereo format.
No need to worry about hum in the meantime, the transformer eliminates all unwanted noise so there's no need for a ground lift. The FET transistors allow for completely silent switching, meaning your rig will execute your carefully crafted sound to the highest professional level.