FOCAL CAR AUDIO REMOTE KNOB WIRED BASS SUB CONTROL for SOLID 1- 4 AMPLIFIERS NEW 465704697817 | eBay
39) Boston GTA-RSL Remote Subwoofer Controller - GTARSL
P48 Sub-Woofer Controller (Rev-A)
Subwoofer Controller Short Form Kit | AK5562 | Core Electronics Australia
PSB-200 Subwoofer Amplifier with Crossover / Phase Control - 200W – Soundavo
Sub-Woofer Controller
Pyle Active Down Firing Subwoofer - 10 Inches, Ported Design with High-to-Low Input Level Controller, Invisible Down-Firing Speaker, Color Black, Built-in Convenience - PSUB10A - Walmart.com
Subwoofer Low Pass Filter Board High Gain & Frequency Preset for Home theater & Car Audio - PCB only | MYPCB
RBC | Remote Bass Control. Dial in the perfect bass.
Nobsound Auto Car Amplifier Audio Subwoofer Bass Control Knob Sub Gain Equalizer Regulator Frequency Controller RCA Line Level Adjust : Amazon.in: Electronics
MTX RTF10P Slim 10" 600 Watts Amplified Active Car Subwoofer Box Bass Controller | eBay
Auto Audio Regler Verstärker Bass Subwoofer Stereo Equalizer Controller 4 RCA #306 _ - AliExpress Mobile
Sub-Woofer Controller
Genelec 8020 Deluxe Studio Monitor and Subwoofer Kit with