Silent Practice Studio Pedalboard - I wanted a fully integrated silent practice system for bass () that included 1) good preamp (MXR-M81), 2) , 3) with Apple pencil, 4) (Linked to playlists with loop capability for transcribing 6) Bluetooth Stomp page turner 7) metronome () - all mixed into Sony MDR-7506 headphones. Footswitch and LED on left is on/off power to all devices with one AC chord (no batteries). In/out on right. Made from shipping container wall steel. Thoughts?