TEAC UD-505-X USB DAC Pre-amplifierThe UD 505 X is a flagship dual monaural USB DAC with an integrated fully balanced headphone amplifier, that fuses high end audio design concepts and TEACs decades of audio design experience, in an A4 sized footprint. The dual mono structure processes stereo signals with higher purity, and the D A converter section uses one ESS Technology ES9038Q2M in each of the left and right channels. This model achieves a high signal to noise ratio by using each