Amplifier Module + Subwoofer

TBS RS-4210AMP Car Amplifier - 4 Channels / 840W - MOSFET Classic model, ideal for those seeking power and good audio quality in the car. Robust aluminum construction with purple heat sink, MOSFET technology, class A, and electronic crossover system. Specifications: ? Power: 4 channels / 840 Watts ? MOSFET technology ? Digital Class A ? Power input: 12V, REM, GND ? Speaker outputs: 2CH / 3CH / Mono ? Integrated fuses ? Aluminum body with excellent thermal dissipation Condition: ? Used product ? Box and connectors show signs of wear and usage marks, but overall structure intact ? Terminals require cleaning (oxidized in some spots) ? Car enclosure / subwoofer (with 30 cm woofer / sealed box / used) The enclosure shows signs of use—but is functional—and ready for installation with amplifier. Details: ? Car subwoofer installed in a sealed enclosure ? Woofer approximately 30 cm (estimated measurement—ideal for powerful bass) ? Coated structure (enclosure with external finish) ? Used condition: usage marks, external wear (as expected in used/older products) ? Already assembled—just connect to the amplifier and ready to use.