USB-DAC- Don"t correspond to the "Advanced AL32 Processing" *DSD signal which brings a Hi-res sound source close to an original sound further. - D/A converter "PCM1795" loading corresponding to PCM 192kHz [ DSD 5.6MHz and ]/32bit - Low jitter design (a DAC master clock design, a dual clock, a lower order phase noise crystal, the asynchronous mode) Headphone amplifier - They are loading and an independent power supply circuit board, a high-voltage drive, and positive/negative both power supplies about a low noise, a low distorted operational amplifier, and a discrete current buffer circuit. - High-grade part (audio grade electrolytic condenser, ??? resistance) gain changeover switch (Normal / High [+12 dB]). It corresponds to high impedance headphone. - Variable (headphone) / fixed (LINE) output changeover switch design - The aluminum housing of hair line finish - The volume knob, volume guard which use aluminum pure material Battery- Mass lithium-ion battery - reproduction time: 7 hour (at time of iPod connection) / 24 hour (at time of AUX connection), and charging-time: -- 3.5 time [ (USB charger more than 1A) ] -- / 6.5 -- while using a time (personal computer) * book machine, it can also charge. - Charge ON / OFF changeover switch