I bought this amp used with a mixer of the same brand new. I had no problem even for your wedding by providing a pushing back almost a whole evening and a coupled qualizer with a gain of about 10db! So any statement until the prolme or DCON channel or anything else ... Finally we must say that I have fixed only 150W speakers (JBL colones wood) so I do not push too much either ... sional exception! For me the report qualitprix is ​​not so bad (I got to about 200)