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YJCO Manuals & User Guides

YJCO is a brand of high-performance digital audio amplifiers, offering powerful Bluetooth and USB digital amplifiers for audiophiles and home theater enthusiasts.

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About YJCO Audio

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.

YJCO manuals

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YJCO TPA3221 High Power Digital Amplifier Ilana Afowoyi

Oṣu Kẹfa Ọjọ 21, Ọdun 2026
YJCO TPA3221 High Power Digital Amplifier Specifications High-concerned chemical None Package Yes Channels 2 (2.0) Maximum Power Per Channel 100 W Brand Name YJHiFiOrigin Mainland China Certification CE, FCC, RoHS…

YJCO D316B HiFi Power Amplifier Afowoyi olumulo

Oṣu Kẹfa Ọjọ 18, Ọdun 2026
YJCO D316B HiFi Power Amplifier Instruction Supports LDAC USE INPUT WIRING DIAGRA   Dimension Power Amplifies 1 Description Package: Power Amplifier *1 No Power Adapter Included Instructions: The operating voltage…

YJCO D325B Bluetooth Digital Amplifier Ilana Afowoyi

Oṣu Kẹfa Ọjọ 4, Ọdun 2026
YJCO D325B Bluetooth Digital Amplifier Bluetooth Digital Amplifier The D325B is built with Texas Instruments' TPA3255 high-power digital amplifier chip, delivering up to 315W per channel into 42. Despite its…

YJCO D600 Digital Power Amplifier Afowoyi olumulo

Oṣu Kẹfa Ọjọ 4, Ọdun 2026
YJCO D600 Digital Power Amplifier User Manual D600 Digital Power Amplifier The D600 is a single-channel digital power amplifier designed with a no-compromise approach, aiming to deliver outstanding audio quality.…

YJCO D325MAX High-Power Digital Amplifier Awọn ilana

Oṣu Karun ọjọ 22, Ọdun 2026
YJCO D325MAX High-Power Digital Amplifier Introduction The D325MAX is a newly designed digital amplifier, powered by the TPA3255 digital power amplifier chip. It delivers an impressive 300W per channel with…

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YJCO support FAQ

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  • What types of speakers can I connect to my YJCO amplifier?

    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.

  • What is the default Bluetooth name and password for YJCO devices?

    The default Bluetooth device name for most YJCO amplifiers is 'YJHIFI' or 'YJHIFI / YJCO'. The default pairing password is usually '8888'.

  • Can I use both the Bluetooth and AUX inputs simultaneously?

    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.

  • Ohun ti voltage should I use for a YJCO power amplifier?

    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.