D-38u is supplied 16mm thickness MDF natural wooden case and 8mm thickness aluminum front panel. The front panel is designed to see the vacuum tube which is used for output circuit and good visibility of display. D-38u is supplied selected high quality parts and materials, those parts were developed with long term try and error. The vacuum tube is ECC82(12AU7) is also haven enough aging. The DAC is superior dynamic range, 192KHz／24bit Burr Brown multi bit DAC, PCM1754 D/A converter, 8 times over sampling gets natural sound. The analog circuit mounts low noise solid state type buffer circuit and vacuum tube buffer circuit. D-38u can select high purely semiconductor output or elegant vacuum tube output by the switch on the front panel. The drive mechanism is mounted on 10mm thickness pure aluminum base, consisted with wooden case and aluminum front panel realize high rigidly chassis structure.Specification:- Analog Audio Output: 1 x unbalanced line- Digital Audio Output: 1 system for coaxial line, 1 system for optical line (TOS-LINK)- Output Voltage: 2.0V- Frequency response: 4Hz-20kHz- Total harmonic distortion rate: 0.004%- S/N ratio: 95dB- Power consumption: 20W (Electrical Appliance and Material Safety Law), 0.1W (at standby)- Power: 100V / 50-60W- Dimensions: 400 (W) x 168 (H) x 280 (D) mm (terminals and knobs excluded) - Weight: 9 KG)- Supplied Accessories: Remote Control (RA-N3), JPA-10000 Power CordWarranty: Comes with 1 year full Japan warranty.