I have purchased an NWA-1000 quite recently. Ok, the sound volume was lousy. I have searched & found this wonderful thread which I have read and tried it out. I think I can enter the test mode because I am currently in a menue "POWER - OTHERS - AUDIO" - however, nowhere it says "test mode" (is this correct??). I choose "Others" and search by arrow key for SP SET. I have set SP SET OFF. But ... there is no difference in the sound quality / volume :-((( Am I doing something wrong?? Pls help! Thanks!