< p> GZRA 450.1-MICRO is ultra-compact subwoofer amplifier with class D circuit, integrated active crossover and auto-on function. This amplifier is a perfect match for GZRA 65.4-Micro amplifier.< br> < br> • Perfect match for GZRA 65.4-Micro amplifier< br> • Micro subwoofer amplifier< br> • SMD components< br> • Class D technology< br> • Variable active crossover and bass boost< br> • Stable power supply< br> • Compact heatsink with engraved Ground Zero lettering< br> • Bass remote control included< br> • High-level input with auto-on function< /p>