High-Performance DAC, JADE-1, Compatible with Various Input Sources *Operation, no issues. Works well.* Please check the photos for scratches, etc. There are some rusty parts. Rust is only on the exterior; there is no rust inside. The top panel is missing, so an aluminum plate has been attached with double-sided tape. Be careful not to cut yourself as it's just cut and pasted. Product Specifications ・Power: AC100V, 50/60Hz ・Power Consumption: 15W ・Headphone Amplifier: Class A amplifier ・Recommended Load Impedance: 16～600Ω ・Input Sensitivity/Impedance: 2V/47kΩ ・Rated Output: 16Ω load 1100mW + 1100mW ・Frequency Response: 20Hz～20kHz +0dB, -0.5dB, fs=44.1kHz ・Total Harmonic Distortion [USB] ≤0.018%, fs=44.1kHz [Optical] ≤0.018%, fs=44.1kHz [Coaxial] ≤0.018%, fs=44.1kHz [RCA] ≤0.004%, fs=44.1kHz ・S/N Ratio: ≥127dB, fs=44.1kHz ・Dynamic Range: ≥120dB, fs=44.1kHz ・Output Impedance: 0.1Ω ・Input Terminals: USB (B terminal), Optical, Coaxial, RCA ・Output Terminals: Headphone output (φ6.3 standard stereo jack), RCA ・External Dimensions: W: 238 D: 317 H: 96 (including protrusions, unit: mm) ・Weight: Approximately 4kg ・Country of Manufacture: MADE IN JAPAN Reference ↓ https://www.orb.co.jp/audio/discon/jade1or2.html