Audioquest - Dragonfly v1.5 - USB Stick DAC and DragonTail for Android The new DragonFly Black 1.5 is software upgradeable through complimentary Windows and OS X desktop applications. As new developments arise in music player applications, streaming protocols, or other associated software, DragonFly users will be able to incorporate those updates into their existing devices. DragonFly Black outputs 1.2 volts-enough power to capably drive all preamplifier input circuits and all reasonably efficient headphones. The new DragonFly Black 1.5 also incorporates improved 32-bit ESS Sabre DAC chips-the 9010-which employs minimum-phase filtering for naturally detailed, more authentic sound.