The Radial ToneBone SwitchBone is a totally discrete ABY amp selector that allows you to switch between amps with ease, without sacrificing any tone or introducing unwanted noise. Along with its Drag control, which allows you to take care of any issues you might encounter requiring load correction, the SwitchBone even gives you the power to run cables upwards of a whopping 50 feet. With the SwitchBone, you can choose between amp A, amp B, or even combine both together. If you're looking for a super smooth amp selector, the ToneBone SwitchBone is a hot ticket.