I like mine. I mostly use it with a Gibson Chet Atkin piezo acoustic electric, an original Variax 700, or a Moog guitars Ghost system. The AD-8 has quite a bit of tonal flexibility. The unit is specifically designed for piezo. The sound is convincing to my ears and a whole lot easier than making up a real acoustic with a couple of good (expensive) small condenser mics. It won't make a single coil or a humbucker sound like a Martin D45. The AD-8 also improves the sound of the Antares ATG-1 acoustic models.