hi i'm choosing between this amps but i need some input in quality and SQ power acoustik STAX 1600/4, Power Acoustik BAMF 1600/4, SPL Gorilla 1600/4 and PPI sedona S580.4 i think that they are over rated wich is better of this one
The S580.4 is a good budget amplifier , I hate the spade type terminals they come with , but overall they sound pretty good for a budget 4 channel , it is rated 100x4 @ 4 ohm , will do around 80 wms x 4 @ 4 ohm
However,if it was me I would look around for something nice used for $150.00.