We at Cactus Sounds are happy to inform that the long a waited Power Fighter Line amps are out. We have started with the PF600, this new baby is a Digital MonoBlock Amplifier. Some spec. Power @ 4ohm : 600W x 1 Input Sensitivity : 0.2V ~ 8V Variable Low Pass Filter : 20 Hz ~ 200 KHz at 24dB/Oct. Subsonic Filter : 10Hz ~ 50 Hz at 24dB/Oct Variable Bass Boost : 0 ~ 9dB @ 45Hz Variable Phase shift : 0 ~ 180 degree Output Master / Input Slave , 2 amps linkable connection to 2 ohms Signal to Noise : 85 dB Damping Factor : 250 < Efficiency @ 4 ohm : 85% < Tested Voltage & THD : 14.4V & 1% THD Our 1st. Shipment has all ready been all most, all ready been sold out. Please contact us for more information.