Well when i tried to tune for lower reflect on the duals...obviously i lost alot of gain..when i tuned for higher fs reading.. i noticed the amp ran hotter.. the reflect was higher..but exceptable.. IMO it lost Efficiency.. amp seemed to work hard..was hitting my alternators harder with less wattage output. I had one amp take out a driver transisitor..was it the reflect?..not sure friend of mine touched the amp and got.."stung" just after that my output dropped off and.. i had an issue with the radio used... the failed parts in the radio suggested possible reflect issue.. although my reflect on the bird was not too bad.. with a 25w slug.. kind of strange.