Hifonics HFR-31 Bass Gain Knob Level Remote Control and Wire for Select AmplifiersHifonics HFR-31 Bass Remote Control and WireFeatures of Hifonics HFR-31 Bass Gain Knob Level Remote Control and Wire for Select Amplifiers Hifonics HFR-31 Bass Remote Control and WireSpecification of Hifonics HFR-31 Bass Gain Knob Level Remote Control and Wire for Sel..