The Stereo Vitalizer is a 1 RU device with ins and outs on the back, and knobs and switches on the front. There are no hidden configuration routines and no multi-fuction parameter knobs, making the unit very intuitive and easy to learn. Plug your cords into the back, throw on the power switch, and start tweaking. You'll hear instant results (and probably a better sound), and you'll be able to start shaping and improving your sound in about 20 seconds without even cracking the manual. The unit it best "tuned" by ear, anyway, though the manual provdes some valuable pointers.