Whirlwind Selector A/B Switch USED

This item is used and is in complete working condition. It does not include power supply or original box. From Whirlwind: The only A,B A+B switch with patented noiseless optical switching. Functions as a 2 to 1 or 1 to 2 switch. Operates with 9V battery. The famous Whirlwind Selector is the only A/B A+B box that provides totally noiseless switching between channels. Send one guitar to two amps or use it the other way around to select between two guitars into one amp. Whichever way you use it, the Selector is the best channel-switching device money can buy. The Selector can be powered by either a 9-Volt battery or DC adapter. Older models have a 3.5 TS power jack (tip positive) and use DC adapter T401-ND. To insert a battery, simply remove the 4 screws from the bottom of the unit and clip a 9-volt alkaline type battery to the battery clip. Replace the bottom and screws. On the Selector are three 1/4” jacks, one 2.1mm DC jack (center negative), two LEDs and two footswitches as outlined b