600 Watt RMS Class D Subwoofer Amplifier

	The high-frequency Class D switching power supply used in the Reference 610a is more efficient than traditional class A/B supply’s and draws less current from your vehicle’s charging system.
	Full-range preamp outputs faciliate use of multiple amplifiers without the need for noisy and expensive adapters or signal splitters.
	The Reference 611a features a 12dB per octave electronic crossover, allowing you to optimize bass performance based on enclosure type and subwoofer selection.
	Dynamic Bass Optimization (DBO) - This provides variable filtering with adjustable "Q" below 100Hz, far beyond conventional "Bass Q" circuits, by allowing the low-frequency output to be optimized for specific subwoofer applications. Frequencies below an enclosure's tunign frequency can be attenuated, preventing damage to the subwoofer and allowing the amplifier's power to be better utilized.
	Optional remote level bass control available.