OK, nice to here, so I won't have to change the layout ^^. I havent programmed in asm yet. I just know a bit how it works. But I am learning C at the moment in school and hope that this will help me. Softwaresided I dont know exactly how to solve everything yet. I want to control every audio channel over 14-bit so we aren't limitated to 127 volume steps anymore. One idea is to use a cc AND a nrpn per channel,etc. to control. If the host/user isnt able to send/receive nrpn you can take cc's instead ( that way you would only have 127 steps instead of 256 ! ). Another idea is to use a cc for "channel select" and modwheel for volume. Here you wont need cc's, but you cant edit parallel volume slides within your host very easily. You'd have to change the channel@cc and volume@modwheel veryveryveryveryveryveryvery often to get hearable results. We could also implement all types of communication and could add a entry to the menu to change it if needed. other things: - Display with buttons or push-encoder (size ? functions ? ) - 3 Pots per channel (Volume, pan, FX) - mute/solo buttons - headphone jack - perhaps cheap lm3915 led vu meters for ins / fx / main ( I can split a 2nd time after the input buffers, but how should I add main and fx to it ? But is it still ok to have a signal split into 4 after the ne5532 ? (Main,FX,Headphone,VU) Can I just add the same buffers again after the fx-return and mainmixer-out to get Headphone and VU without loosing quality ?? Here I'd only have to split into 2 again. any other ideas ? *g* greetz