got a lnib tantric hdd 12 d1 fresh recone done by ronal himself. also have a lnib xs d3100 battery. never seen below 12.3 and never above 15v. had three of the bad boys for about 4 months. just want to downsize and go to a single 18 or 15 setup. also have other stuff too. let me knowMaybe a good mono amp