Just back from rehearsals. I cannot fault the little Redsub. I only used the combo, no extension. Most importantly it sounded really good but it more than kept up with a guitar band and a drummer who is not 'tame'. The volume was on about 2-3. The guy who owns the rehearsal room was very sceptical when he saw it but couldn't believe what it put out. He has run a successful PA company for 30 years or so, so he does know what he is on about. I used to use an Eden Metro 2x10 with an Ashdown 4x10 and for me the Redsub sounded better and cut through everything far more efficiently. The drummer kept on looking at his phone as he thought it was vibrating in his pocket, needless to say it was the bass. I'm well happy! I need another one to run with my Clone Theory!