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【Voltage Compatibility】
When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.
【Plug Type】
Our products use Japanese plug types (A or B type).
Please use a conversion adapter if necessary.
【Important Note on Transformers and Adapters】
A transformer adjusts voltage to match your device’s requirements.
A conversion adapter only changes the plug shape and does not adjust voltage.
Using only a conversion adapter without a transformer may result in damage to the product.
【Liability】
We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.
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The Q4 DAC headphone amplifier is designed with RCA, PC-USB, optical, and coaxial inputs, and the 3.5mm headphone output is compatible with most home audio systems and headphones. (Note: Microphones are not supported.) The RCA output can be connected to a desktop amplifier or powered speakers. The built-in Hi-Fi headphone amplifier chip can drive headphones from 16 Ohm to 200 Ohm.
The Q4 Headphone USB DAC uses the Texas Instruments NE5532 high-performance op-amp chip, which combines excellent DC and AC characteristics. It features very low noise, high output drive capability, high unity amplification, maximum output swing bandwidth, low distortion, high slew rate, input protection diodes, and output short-circuit protection.
With 160mW RMS (32 Ω, 20 Hz - 20 KHz, 0.01% THD) and bass and treble controls, it can be used as a preamp or volume controller for PC/MAC/headphone/speaker systems. No additional software, apps, or drivers are required, making it a simple and easy-to-use digital audio adapter.
The ultra-compact D/A converter and full metal housing ensure high quality, stream bit-perfect 24bit/192KHz HD with low jitter, and feature output protection circuitry to ensure safety in expensive audio systems.
Shipping Details: 1x Q4 USB DAC, 1x USB charging cable, 1x optical cable, 1x PC-USB to Type-B cable, 1x user manual, 24-month warranty. If you have any questions about the installation of the product, please feel free to contact us and we will provide detailed guidance.
Note:
PC-USB supports input sampling rate: 96K/24Bit, high and low audio adjustment range: ±6dB, fiber/coaxial support input sampling rate: 192K/24Bit, frequency response: 20Hz-20kHz (±3dB), 3 PC-USB supports operating systems: XP/W7/W8/W10/MAC/linux, distortion: 0.01%, operating voltage: DC5V, amplifier output maximum power: 100mW 32Ω load, signal-to-noise ratio: ≥105dB, headphone matching impedance: 16-200Ω.
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