I have 4 10 in 2 ohm l7 subs, when I first got the system I had four 1000 watt efx amps. The amps slowly died so I replaced two of them with a hifonics Brutus 1800 watt amp and it sounds great and left the other two subs disconnected. I was looking in getting another hifonics but it appears they no longer make the Brutus 1800 watt so I'm looking for a good replacement Amp to power the two remaining subs or one sub to power all four. I don't have many options for a local stereo shop and will like to order online.