YJCO is a brand of high-performance digital audio amplifiers, offering powerful Bluetooth and USB digital amplifiers for audiophiles and home theater enthusiasts.
YJCO, frequently broadcasting connections under the brand name YJHIFI, specializes in high-fidelity digital power amplifiers designed for audiophiles and home audio enthusiasts. Manufactured by Foshan Yuanjing Audio Co., Ltd., YJCO products are built around premium audio components, including advanced Texas Instruments TPA series chips, ESS DACs, and high-end Qualcomm Bluetooth modules for lossless connectivity.
Their comprehensive amplifier lineup includes 2.1-channel and high-power stereo models featuring Bluetooth aptX HD transmission, USB drive playback, and versatile analog tone controls. Specifically engineered to meticulously drive powerful passive speakers and subwoofers with extremely low harmonic distortion, YJCO amplifiers deliver a warm, dynamic sound profile with robust reliability at an accessible price point.
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YJCO output terminals are strictly intended for passive speakers and passive subwoofers. Do not connect active speakers or constant-voltage (70V/100V) speakers, as doing so may damage the equipment.
The default Bluetooth device name for most YJCO amplifiers is 'YJHIFI' or 'YJHIFI / YJCO'. The default pairing password is usually '8888'.
No. In most YJCO models, Bluetooth connectivity is given priority. If a device is paired and connected via Bluetooth, the AUX input cannot be used. Disconnect the Bluetooth signal to default back to AUX input.
Most models require a DC power supply in the range of 19V to 48V (check your specific model's manual). A higher voltage within the operating range provides a higher maximum output wattage. However, do not exceed the max rated voltage (e.g., 48V on D325B/D325MAX models), or you risk permanently damaging the amplifier。