Hi Leo 1, But your not controlling the stage setting volume, you are only controlling zone 1 volume with the Beringher1010. 2, I agree its not the best for lead synths, but would be massively better With mono mode, which is highly likely possible, but still not added to any updates. 3, Again I agree, a waterfall K/B would be handy. It’s the sounds that are bad. The casio K/b is still useable for organ playing, I use a V-Machine / VB3 with it. The whole point of my post is that, A new buyer might think that casio would update to iron out things that many have said they disliked. But this appears not to be the case. My criticisms were – and still are. How do you control MASTER volume while using two hands to play. This still stands. No exp socket & No midi access to master vol. A stereo analogue volume pedal is probably the only useable solution. Mono mode. Surly this could have been added. A Stage Setting is difficult to use in a midi studio to record and playback midi. Try it yourself, Pretty rubbish. And a few other suggestions that would probably have been possible to have been programmed in to an update. I still stand by these criticisms. The sound is very good, but you really need to be able to fully control a Pro Stage K/b.