As the title states, this is the final video in the Rox-15 build, but does include the asked for playing demo (albeit my bad playing) and measured voltages, requested in the comments of the last and previous videos.
The playing demo might not be that useful as the microphone limiter keeps the SPL's fairly constant, but I'm too lazy to sort out an independent sound recording to merge to the video...maybe I'll do a kit amp sound round-up in the future!