It's ending for 2 years I use Triflex of MACMAH in discomobile, manufactured in a spirit of robustness, reliability and quality of cost. Easily transportable, with a great finish, we really can not criticize the little Systm PA amplifier from an annoying problem to have contact I had the misfortune to meet about a week APRS the purchase of the whole. One of the two satellites was brutally stop working ... I searched two days in the fault connections, disassemble the box, looking in the amplification ... And then dsespoir case, again in a serious violent kick derrire the box everything back up and miraculously the problem was rgl! History of thunder that scares plutt any potential buyer but I think it was just bad luck ... Anyway I do not regret having bought this Systm, As the quality of its sounds clear and pure! The speakers are utiliss from major brands, and noise that you get the final team aisment room 300. Quick Tip: Add one or more screws hold the most refined grid of the subwoofer which sometimes vibrate tandence Manir parasite ... (I quibble a little ...!)