Unbalanced 1/4" input jacks used to connect instruments to the J48 Stereo.
Thru-put from the J48 Stereo to a the amp. High impedance will not load instrument down.
Reduces the input sensitivity for active basses and high output keyboards.
Illuminates when 48V phantom power is present.
High pass filter reduces excessive low frequencies that can cause resonance and acoustic feedback on stage.
Balanced mic level outputs used to feed mixer or mic preamp.
Lifts the audio ground at the power supply to reduce hum and buzz caused by ground loops.
Polarity reverse use to correct the phase on old gear and reduce feedback on stage.