when I called Klaus on a whim 'just for some information' I ended up driving to Indy and buying a KhartagoSE++whatever because he guaranteed that it would sound twice as good as my Yamaha Z9. I couldn't hardly believe this but I thought I would give it a try, after all he does offer a money back guarantee.
I would say it easily sounds AT LEAST twice as good as my Z9.
Way to go Klause!! I will be calling you in a few weeks to see about tweaking whatever else I can to the Khartago.