Devilishly brilliant. The iDSD Diablo, with its sleek new design and fiery red finish, proudly sits at the top of the portable / transportable DAC / amp range. It is built for true headphone enthusiasts who crave pure, unadulterated sonic performance. Just like a race car designed for uncompromising speed, the iDSD Diablo removes sound customization as well as Bluetooth connectivity to focus on pure sonic power. Prepare for an exhilarating ride as it will drive any headphone on the planet astonishingly. Simply put, the iDSD Diablo is the best portable amplifier designed to deliver reference-level sound.