passive control unit that functions as an impedance control,
signal level control, or a signal muting kill switch!
impedance mode offers 0 to 2 mega-ohms of resistance
to avoid effect washout from large input signals, noisy pickups, etc...
level mode can be used if impedance modes do not offer enough signal pad
or if you want a master volume control or muting switch!
unit is 100% passive but a power supply or 9V battery
is required for the LED indicator to function.
control: signal impedance/level adjust
load: selects impedance ranges or level mode