Specifications Standard Input Interface: PC USB / coaxial, fiber optic (with toggle switch)Standard output interface: 6.35mm headphone output base line standard RCA connectorsLine level output: RMS 2VPerfect driving 32Ω-600Ω headphonesOutput power: 90mw / 600Ω, 180mw / 300Ω, 450mw / 100Ω, 610mw / 62Ω, 910mw / 32Ω, 1000mw / 16ΩSNR: ≥105dBDistortion: ≤0.001%Frequency response: 20Hz-20KHzAdapter Voltage: 100-240V ACMachine power / adapter output voltage: Dc12V 1A aboveUSB-tier manufacturers in Taiwan with a stable performance VIA VT1630, high resolution, under a wide range of frequency support 44.1K-192k 24BIT 16BIT mode mode 44.1K-96K, Android 4.2.2 system can support OTG mode (need native system), support Applle phone tablet, etc. OTG mode, DAC part is fine CS8416 + CS4398 LPF output using OPA.Package Included 1 x FX Audio DAC-X6 HIFI Amplifier1 x Power Adapter1 x 6.5 To 3.5 Headphone Adapter1 x USB Cableแถมฟรี สาย opticalอ่านเพิ่มเติม