【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.
Headphone amplifier with microphone function: The headphone DAC amplifier K5 PRO with additional microphone function performs excellently as an audio converter. Perfect for home gaming systems. Equivalent to an external sound card, applicable to PS5/computer/PC/MAC/Switch/active speakers, etc.
2-in-1 USB DAC Amplifier: Converts USB Type C/optical/commercial signals to 3.5mm AUX and RCA signals with low distortion and excellent dynamic range. Compatible with smartphones (even mobiles) with 2-in-1 USB Type C interface charging port and audio input. RCA output can be connected to an amplifier or active speakers. The 3.5mm AUX and mic ports can drive 16Ω to 300Ω headphones.
High performance chip: Adopts Texas Instruments NE5532 operational amplifier chip. The K5 PRO's circuit design is optimized for low ground noise and clean sound. It features very low noise, high output drive capability, high unity gain, maximum output swing bandwidth, low distortion, high slew rate, input protection diodes, and output short circuit protection.
Product specifications: Equipped with bass, treble and volume adjustment functions, can be adjusted to match the music. USB C/Optical/Coaxial Sampling Rate: Up to 24-bit/192kHz, THD ≤0.003%, SNR ≥110dB. Output power: 1000mw@16Ω, 500mw@32Ω, 300mw@64Ω, 150mw@128Ω, 80mw@300Ω.
Packing details: K5 PRO DAC amplifier x1, 3.5MM headphone splitter x1, 2-in-1 USB Type A/C to Type C cable x1, user manual x1, optical cable x1, 24 months worry-free warranty. If you have any questions, please feel free to contact us.
Note: ① Before turning on the power, please make sure the power cord is properly connected and not loose, and the socket is working properly. ② If the output power of the audio source device is insufficient, please use a 5V 1A or 2A power adapter. ③ To turn on the power, press and hold the volume button for more than 2 seconds.
The upgraded version of Fosi Audio Q4 adds microphone functionality, the K5 Pro headphone DAC amplifier combo, and a next-generation audio converter with unparalleled internals, better performance, and richer audio details. Born for games. K5 Pro Stereo DAC Headphone Amplifier is ideal for home gaming systems, equivalent to external sound cards, suitable for PS5/Computer/PC/MAC/Active Speakers, etc.
