300-Watt Mono Subwoofer Amplifier with on-board variable electronic crossover. 300W Subwoofer Amplifier Highlights Cast-aluminum heatsink Orange backlit JBL® logo Built-in electronic crossover networks Auxiliary line-level outputs Full range preamp outputs are provided facilitating multiple amplifier hookups without the need for high-loss Y-adapters or signal splitters. The GT5-A3001 comes outfitted with a variable 12dB per octave electronic crossover allowing you to …