4TECHNICAL SPECS5. Insert SwitchSwitches the insert loop into the signal path.6. Instrument SwitchThis feature engages the Instrument input on the front of the WA73 and disconnects the XLR microphoneinputs.7. TRS Instrument InputYou can connect a variety of instruments via the instrument input on the front panel of the WA73 including:acoustic and electric guitars, bass guitar, keyboards, synths and drum machines.8. Red Input KnobThis is a 22 position gain switch that adjusts gain for Line / Mic / Hi-Z level sources.9. HI Pass Knob18dB per octave slope, switchable between 50Hz, 80Hz, 160Hz, 300Hz.10. Output Control KnobThis knob controls the signal exiting the WA73. It ensures that the amplified signal doesn’t exit theWA73 too loud and overload the inputs on your recording interface or the next device in the signalchain. It also gives greater ability to drive the gain of the preamp harder resulting in greater colorizationand tone shaping within the various settings.11. Power SwitchThe power switch is used to power the unit on and off. LED light will indicate if the unit is powered on.To extend the life of the electronics please turn the WA73 off when not in use..tn1 2 34 5 6 7 8 9 10 11