Master Audio amplifiers SERIES DL, amplifiers are good way to game, o EXAGRES I think their prices. The power supply is too tight to drive sub boxes, the diffrence in cost with a Crest or QSC of quality is obvious. Trs serious problem on a SERIES, the capacitors tend explode! Indeed, the transformer has no middle point, the mass is floating supply voltages can fluctuate widely and Exceeds the permissible voltage capacitors: your exact is catastrophic, the cards are not r cuprables ... in short the amp is dead! A dixaine amp, I saw 3 or 4 in this state: it is lamentable. SERIES 2 J'espre that does not suffer from this problem, but for me, Master, it's over.
(Caution: Never connect a Master without charge!)