Just purchased High Energy HSK 165 XL for a good price. Looking for a 4-channel amp under $300 or cheaper that will make these speakers truly sing. I have read that you should push these with a minimum of 150 watts or more. I was thinking either Soundstream REF 4.920, MB Quart Q4.150, Alpine PDX-4.150. I know the Alpine PDX is a Class D. Perhaps I should stick with A/B amps?

Can I do better for 4-channel amps? Any of you like the Cadence line?