Near mint condition alpine pdx f6. High power 4 channel amplifier with very low distortion. This amplifier has built in high pass and low pass crossovers. There is also a switch for both high level and low level voltage input. Everything works as it should. CCosmetically amplifier is a 9.5 out 10 it has a couple small blemishes. 150w x 4 @4 or 2 ohms 300w x 2 @4 ohm bridged