Ultrasone Digital Audio Converter 24/192 DAC & Headphone Amplifier Black (NAOS) Supports smartphone (iOS, Android), tablet, notebook/computer (Mac OS, Windows) Output: 1/8th mini-jack Audio resolution: 24bit/192Khz. Frequency range: 10 Hz - 30 kHz Dimensions: 46 mm x 18 mm x 6 mm. Weight: 6 g Included adapter cables: micro-usb, Lightning, USB (Type a), usb-c. Travel kit included