Why do you need a DAC and Amp? If you have high quality or hi-fidelity headphones you are going to need some power in the form of an amplifier to drive them to their true performance potential. You are also going to need an exceptional external HiFi Digital to Analog Converter (DAC) to process your music files in high resolution to enhance your experience even further. The DACs in a smartphone, computer, tablet or audio player on the market are not designed for processing high quality sound. iFi audio has developed top of the line products to meet the various needs and preferences whether you are an everyday listener or an experienced audiophile. Pro iDSD Desktop DAC. There's no wrong way to enjoy your music as long as you're enjoying it, so we've created the Pro iDSD reference grade DAC and amp combo to be the centerpiece for whatever strikes your mood. When convenience matters, stream from your favorite services like Spotify, Tidal, and Qobuz over WiFi for up to 24 bit / 192 kHz high resolution streaming audio. For the ultimate in hi res audio connect your PC, laptop, tablet, digital audio player, Android, or iPhone (with Apple Camera Connection Kit, not included) to the high speed USB 3.0 input for native playback of all formats, including FLAC, WAV, PCM, DSD and even MQA decoding. The micro SD TF card slot and USB A inputs let you connect your external library, and you can run a network usb drive through the built-in ethernet port. Dust off your CD collection and plug in your DVD player via the SPDIF optical toslink jack to rediscover old classics. On the back, RCA jacks and a balanced 3 pin XLR output connection work directly with your home audio amplifier or receiver allowing the Pro iDSD to function as the preamplifier for your home audio. When speaker listening isn't an option, the built-in headphone amplifier will drive your favorite pair of headphones with ease as you listen to your favorite beats. Choose a filter from one of five options or apply DSD