I used this amp 8 years, I shut up ... Not satisfied nanmoins practice, it does a PSE died and dsquilibr! No, I had not tried other models before acqurir ... The report quality price in francs silent a little pricey, but the price has dropped significantly especially since I do not know if it is still on the market. I said that I t satisfied until I've heard of CS .... The series L is another story, and immediately s'aperoit the diffrence between this MODEL latter, who, comparison, mtallique ringing, and ringing CS SERIES of "hot" and harmonious. Overall, this is an amp that makes great service, but it has more "potato" as fine ... Knowing now MODELS CS, I do not do it again may be the choice ...