After plugging in through the USB, SPDIF, Optical, or analog RCA inputs, the X1 supports 24 bit / 192 k digital audio decoding all the way up to DSD and can be broadcast through either headphones or speakers Via the analog RCA and 6.5 mm audio jack outputs. Able to adjust to any need, the X1 Pro can be used as a DAC, a headphone amp, and even a pre-amp. Versatile, stylish like Darth Vader’s Destroyer, and offering excellent bang for your buck (this is one of the most affordable DSD DACs available), the Aune X1 Pro solves all your audio emergencies in one self-contained system.