We did some comparative testing between all the Sundown Audio SAZ series amplifiers today. The saz-1000d, saz-1500d, saz-2000d, and the saz-3000d. Guts of the new saz-1000d. This thing is a lil powerhouse. All testing was done in my '93 Explorer Sport on a single stock Sundown NightShade 15". The weather was very cold today down in the 30s. My peak frquency was off cause of the cold and overall I was down 0.8db with all amps but this test was only for comparison purposes anyways ju