The new HA-P90SD combines the dual functions of a high-quality portable amplifier and a DSD native-compatible player, and was developed through the integration of high-accuracy DSD file playback technologies that TEAC has amassed in its development of professional sound components, along with its clear, distortion-free headphone amp technologies.nBurr-Brown PCM1795 D/A Converter widely used in stationary D/A converters.nTEACs UD-501 has consistently received high marks as a reference model for standalone D/A converters, and both it and the DSD128-compatible TASCAM DA-3000 Master Recorder employ the Burr-Brown PCM1795 DAC, which has been successfully employed by a wide variety of top-end equipment makers. Discrete headphone amp component design features op-amp with push-pull circuitry.nThe HA-P90SDs AB-class headphone amp features a discrete component configuration that utilizes an operational amplifier and push-pull circuitry. Knowhow accumulated through the development of TEACs HA-501 headphone amp was lavishly invested in this circuit design, which achieves a 10Hz 80kHz frequency range and a S/N ratio exceeding 105dB, as well as 0.004% total harmonic distortion. Noise-suppression circuitry further ensures clear sound output, conveying the finest subtleties of the original, high-resolution sound source itself.nnLow-distortion, high-precision Burr-Brown OPA1602 audio op-amp.nThe headphone amp section features a discrete design that employs a Burr-Brown OPA1602 SoundPLUS operational amplifier developed exclusively for audio components. It realises clear sound reproduction with greatly minimised distortion.nTEAC HR Audio Player enables DSD native playback from various devicesnThe TEAC HR Audio Player application provides access to high-resolution sound source playback, and is compatible with both iSO and Android smart phones systems, as well as Windows and Macintosh computer systems