Product selling points: 1. The product uses high voltage and high capacity energy storage capacitors for reliable performance 2. MCU monitors voltage to reduce noise and accurately measures temperature to control fan operation 3. Features a durable base design with stable contact and effective shielding 4. One-click bridging with two gain settings; selectable temperature-controlled or manual fan operation 5. Equipped with a dedicated inductor for digital power amplifiers, supporting high current, low magnetic loss, minimal parasitic capacitance, and reduced heat generation Product parameters: Product Name: 160W Dual Channel / 220W Mono Pure Rear Stage Amplifier Board Amplifier Chip: TDA7498E Operating Voltage: Safe DC input range is 15-35V, with a maximum of 36V. AC power is not supported. Do not reverse polarity. A 32V, 8A or higher DC power supply is recommended Maximum Output Power: 160W + 160W stereo (4 ohm speakers, 36V supply); 220W mono bridged (3 ohm speakers, 36V supply) Compatible Speakers: 4-8 ohms, 50-160W in stereo mode; 3-8 ohms, 50-220W in mono mode Cooling: Temperature-controlled automatic cooling fan or manual continuous fan mode Gain Settings: 33.1dB (Low), 35.6dB (High) Bridging Mode: Connect R+ and L+ in parallel, R- and L- in parallel. Set DIP switch 2 to ON. Perform connections only when powered off Material: Plastic Color: Black Package Contents: 1 x Digital Power Amplifier Board Note: Other items not included. Lighting and display differences may cause slight color variations. Measurement tolerance: +/- 1-3 cm