Hymalaya Pro – Equivalent to two PCM1704K balanced connections Hymalaya Pro R2R DAC, with the added support of a new FPGA algorithm and 0.01% precision resistors, adds up to a performance that suppresses the PCM1704 in every way, reaching the THD (Total Harmonic Distortion) rate of -6 dB 0.0012%. Lossless Playback - Supports multiple music playback applications Serenade uses the legendary FET operational amplifier, with a discrete component LPF analogue circuit that translates into detailed sound with high-precision, low-noise test indicators. The bold design of the whole signal path eliminates coupling capacitors, removing nonlinear distortion caused by electrolytic capacitors, and leaving only pure, full-range sonic output. Transformer is the foundation of full-range sound The 50w toroidal transformer is comprised of a high-quality full-band iron core, combined with a large pond filter capacitor of nearly 30,000 microfarads and a multi-stage, multi-channel, low-noise, high-speed voltage regulator circuit, providing a pure and fast power supply for the SERENADE. Class A headphone Amplifier Circuit The SERENADE amp circuit is based on a Class A design, supplemented by a precisely matched, fully discrete transistor amplifier circuit so that the amp circuit inherits the noble tone of the more expensive Prelude Amp.