Alctron Electronics SW-21 AB/Y Switcher


The Alctron SW-21 is an extremely useful A/B-Y switching box, which is simple to use and can be put to use in the following ways:

  1. It enables routing of a common source signal (guitar, bass or keyboard) between two amplifiers or amp channels or to both amps simultaneously.

  2. It allows selecting between two source signals (e.g., two different guitars) into the same amplifier or to use both sources simultaneously.


  • Switches a signal between two different targets
  • Directs a signal to two targets simultaneously
  • Switches between one of two different source signals sent to one target
  • Combines two source signals in parallel switched between two different targets
  • Combines two source signals in parallel directed to two targets simultaneously
  • Low audible switching noise
  • No bleed-through between channels
  • LEDs signal display
  • Unplugging from jacks labelled “PARALLEL” turns off 9V battery


  • Connections:  2 x 2 1/4” unbalanced jacks
  • Switching Current Rating: 3A (Max)
  • Display: 2 Green LEDs (Signal path/Mode indication)
  • Power:  9VDC Battery (For LED indicators)
  • Material:  Heavy-duty all metal construction
  • Dimensions (WxDxH):  3.74” x 2.87” x 1.57” (95 x 73 x 40mm
  • Weight:  0.74 lbs (336 g)

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