Compare Quick view Crescendo Audio Crescendo Audio C2000.4D - 520 watts x 4 channel Concerto Series Amplifier MSRP: 1800woofers Price Now: $539.99 Was: 4 channel Class D Full Range Amplifier Capable of over 1040rms bridged x2 @ 4ohm of pure Class D power! Highpass/Full/Bandpass 100% Custom Designed Active capable Crossover network with x10 multiplier switch Custom 24db defeatable crossover network with... C2000.4 MSRP: 1800woofers Price Now: $539.99 Was: Compare Quick view