Radial Engineering Switchbone JX-2 ABY. Includes original box and power supply.

From the Website:

• 100% discrete class-A signal path for exceptional audio
• Exclusive Drag control pickup load correction
• Variable power booster with mid control for added cut
• Transformer isolated output to eliminate ground loops
  

The Radial Switchbone ABY is a high performance ABY switcher that is designed to deliver the natural tone and feel of the instrument without introducing noise, distortion or artifact of any kind.

The design begins with the same 100% discrete class-A buffering circuit as the critically acclaimed Radial JD7 Injector for exceptional audio performance. Each part is hand inserted into a double sided through-hole PCB for optimal signal transfer. To ensure the natural feel of the instrument is maintained, Drag™ control load correction lets you re-introduce the natural relationship between the guitar pickup and the amp that is invariably lost when the guitar signal is buffered. This also allows longer cable runs of upwards to 15 meters (50′) without noise.

There are three footswitches on the top panel: The first selects between A or B amps while the second is used to combine amps. To get rid of the pops common to passive switchers, the Switchbone employs photocells that ramp-up the signal for smooth noise-free switching – even when used with high gain amps. To eliminate hum and buzz caused by ground loops, the Switchbone’s second output is equipped with a transformer for 100% isolation. To ensure the two amps play in absolute phase, you simply toggle the easy access 180º polarity reverse switch.

This will ship insured- CONUS only