A936 Portable Fiber Coaxial USB Headphone Amplifier Digital Audio DAC Decoder

Characteristics
1. The USB uses VT1630 produced by Weisheng, a large manufacturer in Taiwan, with stable performance and high resolution, with a wide frequency support range of 44.1K-192K in 16BIT mode and 44.1K-96K in 24BIT mode.
2. The DAC partially uses the refined CS8416 + CS4398, and the earphone amplifier chipset adopts OP275 + TPA6120 digital audio decoder and DAC +, which can generate shocking music live sound.
3. CS8416 + CS4398 as a common combination of feverish chip, in electronic magazines and various applications have a detailed record, which indicates that the performance and sound quality have been recognized by the majority of music enthusiasts. What we have done is to optimize the power supply and use high-precision active crystal oscillators to achieve the effect to the limit.
4. The combination of TPA6120 + OP275 earphone amplifier chip, which is the beautiful combination of earphone amplifier. TPA6120A2 is the current feedback type differential input high-fidelity earphone amplifier produced by TI Company. With very low distortion, extremely high bandwidth and conversion rate for professional audio applications, it is suitable for high-end professional listening earphone amplifiers, professional audio equipment, listening and other equipment. TPA6120A2 has a dynamic range of 120dB with a conversion rate of 1300V/s and a distortion of 0.00014 THD+N. The signal-to-noise ratio (SNR) of 120dB adapts to the stringent requirements such as DVD audio and Super Audio CD/CD (SACD), and can perfectly drive 30ohm to 600ohm of headphones. OP275 is a classic feverish amplifier chip.
5. Standard input interface: PC / USB / fiber / coaxial (switch with switch unplugged).
6. Standard output interface: 6.35mm headphone / line output / standard RCA interface.
7. Output power: 90mw/600 ohm, 180mw/300 ohm, 450mw/100 ohm, 610mw/62 ohm, 910mw/32 ohm, 1000mwr/16 ohm.
8. The power supply uses a voltage of: AC 100-240V.
9. Power output voltage: DC 12-1A.

Notes
1. When the volume knob is connected to the power amplifier and active speaker, the adjustment knob will not work. Only when the earphone is connected, the adjustment knob will work.
2. The system volume cannot be adjusted when connecting to the computer, because it is a digital signal. Suggest not to adjust the volume on the computer, which will cause noise. You can adjust the volume of the power amplifier or the volume of the player.
3. Speakers and headphones must be unplugged when switching, no automatic switching.