I use Opra for Db prs technology since 6 years, I must say the 415-Premire sries silent weaker and less powerful than the new sries. But I can say that I compared several brands (JBL, Behringer, Mackie, etc.) and the only boxes I Whereas the same quality level of its quality, it's the FCR and some new MODEL RCF and Yamaha are the same company that Db! THE Opra is hi-fi but the FCR FCR projte a little more. I had to buy at least two dozen pairs of Opera box, I know them well and Unlike Previous comment, which compared with JBL, there is nothing to compare these two products, the JBL is derrire DSOL far ...