I've never heard autotek before but i have read posts about their amps before. I have a guy selling the sx2300 for $150.Is it worth it????? I know the reg. price is much higher.
Also how would work on my 2 Fi audio X 12's on a factory alt.( not sure about power consumption on these amps.)
the model is very good. But let me tell you something. That's an A/B amp that will pull a lot of current from your alt. Amp's quality is very good and you might see 900w-1000w rms at 14.4V
If i were you, since you're using a factory alt, i'd grab a class D amp.