wiring and power input Uses a copper DC connector and fencetype terminal to handle large current with minimal heat and without damaging the wire Includes a DC head lead and is compatible with the product input power interface; wiring is easy even if you do not have a DC head adapter or battery performance Class D amplification Class D amplifier IC delivers efficient, performance sound Advanced oscillator and PLL circuit provides multiple switching frequency options to reject AM interference Modulation frequency up to 1.2 MHz with power output distortion under 0.1%, helping reduce noise Robust protection features Shortcircuit and thermal protection plus overvoltage, undervoltage, and DC protection safeguard the device In overload conditions, a fault is reported to the processor to prevent damage HIFI stereo with versatile inputs Dual channel power amplifier board designed for HiFi music Two input methods: AUX and Bluetooth, 2in1 Bluetooth 5.0 offers higher transmission efficiency and longer range Includes a filter inductor to deliver rounded, clear sound 23 practical use scenarios Home hifi upgrade: connect to a Bluetooth source or a wired AUX device to enhance a stereo system with a compact, efficient twochannel amplifier DIY audio project: integrate into a small cabinet or enclosure, wired directly to a suitable DC supply using the included DC lead, without needing a separate DC head adapter Portable or spaceconstrained setups: use in compact PA or Bluetoothequipped listening stations where a reliable, lownoise hifi amplifier is desirable Key attributes and performance at a glance Function: twochannel hifi power amplifier with Bluetooth 5.0 and AUX input Compatibility: compatible with the product's input power interface via a DC lead Material and construction: copper DC connector and fencetype terminal for robust power handling Performance: efficiency Class D operation with interference rejection and very low distortion, designed to deliver clean audio with reduced noise Protection: comprehensive shortcircuit, thermal, overvoltage, undervoltage, and DC protections with overload fault reporting to the processor