XO-34 3 Band Stereo Crossover has it's own level and frequency control knobs, for the Low, Mid, High, and a separate mono subwoofer output. A low cut rumble filter and phase reverse button.

Power Switch
L/M/H output Level Control
30Hz Low Cut Switch
MH Crossover Frequency Controls
LM Crossover Frequency Controls
Phase Switch
Subwoofer Output Level Control
AC Cord
Output Connectors
Stereo Input Connectors
Subwoofer Output Connectors