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Title: Rockville RVB8.1A 8" 300W Powered Car Subwoofer  
Category: Electronics  
Brand: Rockville  
Description: An 8‑inch active subwoofer with a built‑in 200 W RMS/300 W peak amplifier, delivered in a compact vented enclosure.  
Details: Features an adjustable low‑pass crossover, bass‑boost EQ, dual RCA and speaker‑level inputs, and a side‑mounted aero port for deep, tight bass.

Price is $