I think it is good when members post live performances of new keyboards. It at least provides a true, unpolished look at the instrument. By the way, I did not mention the recording was done with a Canon Powershot SX10 IS camera positioned behind my Bose L1 Compact - no direct connection to the keyboard.
I made an interesting discovery last night. I connected my Bose L1 Compact to the BK-9 using the headphone jack and the sound is entirely different from the sound I get when connected to the two outputs on the back of the keyboard. The R/LR outputs produce a very heavy bass sound but the headphone jack has hardly no bass at all - very strange.
Deane