Passive Bass Volume Level Controller For Amplifier/Subwoofer
Just gently rotate the dial of the Frequency level and Gain level on the front panel to adjusts level of its RCA left and right channel output. Small footprint with size at 1.9"(W) x 2.2"(D) x 1.6"(H) or 48mm(W) x 56mm(D) x 41mm(H).