Straight from Jacob in another thread...The 20.1 is a more powerful amp than the SAZ-1500D, period. It's bigger and more expensive (new vs. new) so it should be One amp vs. one amp the 20.1 is more powerful.
Feature wise they are basically the same, just more power out of the IA 20.1. There's really no telling how much different there is because of how underrated both amps are imo. Is the 300watt the extra watts you need? It is worth the money if you need it. Because the IA 20.1 will put out fairly more then 1800wrms and the SAZ-1500D will put out more then 1500wrms.Feature wise? They both have 0 ga. inputs? Obviously there is a 300W difference, but is the 20.1 worth the extra $$$ for 300W? Is the SAZ
Thanks for answering my n00b questions
as with any high powered amp. if someone says they have 4000 watts, 0 gauge wire, and one Wal-Mart battery, something tells me he doesn't have 4000 watts. The system as a whole has to support the other. Voltage is king.It's like sticking a race motor 502 in a Chevy pickup. You have the power, but it means nothing unless you get it down to the ground.unless u got a good electrical sysetm..