the 2 i had lasted 6 days strapped 2 ohm, dropped to .5 for a burp and burp there they wentIt will run daily at .5 and burp .25 Built like a tank. Comparable tO the 3500-4000 watt boner amps at a fraction of the cost. I was debating between the audiopipes or the rd 3250.1v2 amps. I went with the rd amps because the owner/Steve is a member of all the forums and can be easily reached. After all these problems with the rd amps I wished I would have stuck with the audiopipes.