Key Features2.1 Channel Audio Output: Supports two main speakers and one subwoofer.Output Power: Up to 160W × 2 (L/R) 220W (Subwoofer), depending on power supply and speaker impedance.Amplifier Chip: Uses TDA7498E amplifier chips.Input Options: Supports AUX, Bluetooth, and USB input.Bluetooth Version: Bluetooth 5.0 with a range of up to 49 ft (15 m).Compatible Speakers: Supports 30–200W speakers with 4–8Ω impedance.Technical DetailsProduct Type: 2.1 Channel Bluetooth Amplifier BoardModel: ZK-HT21Bluetooth Version: 5.0 (Up to 49 ft / 15 m)Input: AUX / Bluetooth / USBAudio Channels: 2.1 (Left Right Subwoofer)Amplifier Chip: TDA7498EPower Supply: DC 15–36VUndervoltage Protection: Below 9VCompatible Speakers: 30–200W, 4–8ΩOutput Power:Left/Right Channel: Up to 160W × 2Subwoofer: Up to 220WProtection: Over-voltage, Under-voltage, Overheating, DC Detection, Short-circuitDimensions: 5.71 × 4.96 × 1.10 inWeight: Approx. 13.93 oz (including packaging)NoteOutput power depends on power supply voltage and speaker impedance. Higher voltage and lower impedance can result in higher output power. Ensure the power supply provides sufficient current for stable operation.
