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Totally passive, and ultra-transparent with zero bleed-over when in "A" or "B" mode. This particular design uses the "X" pattern wiring for grounding out each unused signal.

Plug your favorite tuner into the "Tuner Out" jack to access dead silent tuning action at anytime.

LEDS: For the 9V DC Jack, these units require a 9V AC adapter with a Boss/Ibanez style 2.1mm barrel plug. If you do not have one, we have these in the "Accessories" section. (Unit will work without LED's. The LED circuit in any Loop-Master™ unit does not affect tone.)

DIMENSIONS: 4.7" X 2.37" X 1.1"