80% eff.no problems on room here whatever i get is going in the bed of my truck.. i just see one big amp like the SD could possibly fail at any time then i'm screwed till it gets repaired.. the amp has gotta create alot of heat while playing.. this is just for bass race btw. plus the SD 16k requires about 16 batteries from what i was told.. doesn't seem to be really efficient
1600A in 12.6V, we recommend 100Ah for each 1000W. Any decent D class amp should have 100Ah for each 1000W.