Less than a month of use on it, bd1500 amp and also have a d4s 100x4 if interested. I’ve got amazon receipts to prove purchase. Great amp I always wanted but I actually upgraded after I got it. The amp on Amazon I believe was $1050 plus tax and I believe the d4s was about $400-$450cnd this Rockford amp I believe is the second to largest they made that year, it’s a big amp and is very capable. It’s a 1-ohm stable amp if you have the electrical to supply it with. If you want a crazy system you run this with 0guage straight to the alternator and battery then support the amp with something like an lto6 or an optima. You need extra power available for this amp. My amp has a huge battery bank and is over 10,000 watts at .5ohm right now. 152.15db@36htz the amp is in Victoria bc