As we can see this uses unit uses a Burr-Brown Corporation© digital to analog converter (DAC), as well as Burr-Brown FET-Input, Low Distortion Operational Amplifier, if you are not sure what I just said, in a nutshell, Burr-Brown components especially DAC’s are some of the best in the industry. The OPA604 is a FET-input operational amplifier designed for enhanced AC performance. Very low distortion, low noise and wide bandwidth provide superior performance in high quality audio and other applications requiring excellent dynamic performance. New circuit techniques and special laser trimming of dynamic circuit performance yield very low harmonic distortion. The result is an op amp with exceptional sound quality. The low-noise FET input of the OPA604 provides wide dynamic range, even with high source impedance. Offset voltage is laser-trimmed to minimize the need for interstage coupling capacitors.

The PCM2702 is a single chip digital-to-analog converter offering two D/A output channels and an integrated USB 1.0 compliant interface controller. The newly developed SpAct™ (Sampling Period Adaptive Controlled Tracking) system recovers a stable, low jitter clock for internal PLL and DAC operation from the USB interface audio data. The PCM2702 is based upon Burr-Brown’s Enhanced Multi-level Delta-Sigma Modulator, an 8x over sampling digital interpolation filter, and an analog output low-pass filter. The PCM2702 can accept a 48 kHz, 44.1 kHz and 32 kHz sampling rates, using either 16-bit stereo or monaural audio data. Digital attenuation and soft mute features are included, and are controlled via USB audio class request. Top marks to Silverstone for using top quality components where it counts the most.