YJCO Bluetooth 5.4 Power Amplifier 300Wx2 with QCC3084 Chip PCM5102 Stereo Digital Audio TPA3255 Hifi Sound for Home Theater

Package:Power Amplifier 1No Power Adapter IncludedInstructions:The D325S is built with exceptional attention to component quality—its gold-plated RCA jacks ensure enhanced durability. The amplifier chip is mounted in direct contact with the chassis for heat dissipation, offering a larger cooling area and far superior thermal performance compared to internal heat sinks, enabling stable long-term operation. Equipped with high-capacity ELNA filter capacitors, it delivers stable power supply with minimal ripple. The LPF circuit employs German WIMA capacitors, while the coupling stage features premium ELNA capacitors—all audiophile-grade components.Powered by the JRC5532 op-amp (upgradeable to higher-end audiophile op-amps for enhanced performance), the amplifier utilizes Texas Instruments' TPA3255 chip, delivering a robust 300W per channel. This "compact powerhouse" easily drives large speakers with effortless authority. For wireless connectivity, it integrates the QCC3084 Bluetooth module supporting LDAC lossless transmission, paired with the PCM5102 Bluetooth decoding chip—resulting in Bluetooth audio quality that rivals wired connections.Use Instructions:1. The D325S amplifier output is only compatible with passive speakers. It cannot be connected to active speakers or constant-voltage speakers.2. The D325S operates on a power supply of DC 24V-48V. Higher voltage delivers higher output power, but the voltage must not exceed 48V—otherwise, the amplifier will be damaged. The power plug specification is 5.52.5mm, with positive polarity inside and negative outside.3. The negative terminals of the left and right channel outputs must not be connected together; such a connection will result in amplifier damage.4. Select different input modes using the front-panel switch. For Bluetooth playback, switch to BT mode, then search for the Bluetooth device named "YJHIFI / YJCO-QCC3084" on your smartphone and connect to it.Specification:Model: D325SInput Interfaces: RCA, XLR, Bluetooth (BT)Power Amplifier Chip: 1 × TPA3255Bluetooth Version: Bluetooth 5.4Frequency Response: 20 Hz–20 kHz @ 1 kHz, ±0.3 dBOperating Voltage: DC 24 V–48 VDC Power Port Size: 5.5 mm × 2.5 mmBluetooth Chip: QCC3084Supported Bluetooth Codecs: SBC, AAC, aptX, aptX LL, LDACBit depth: 16–24 bitSampling rate: 44.1–96 kHzBluetooth DAC Chip: PCM5102Rated Output Power: 300 W × 2 channels (4 Ω), tested at DC 48 V inputTotal Harmonic Distortion (THD): 0.5%Built-in Protections: Reverse polarity protection, short-circuit protection, auto-recovery overheat protectionNet Weight: 0.85 kgOverall Dimensions: 152 mm × 45 mm × 130 mm