ZK-HT21 Stereo Amplifier with Bluetooth

The ZK-HT21 Hi-Fi Stereo Amplifier is a powerful 2.1 channel audio solution designed for DIY audio projects, home sound systems, and speaker upgrades. Built around the high-performance TDA7498E amplifier chip, this board delivers crystal-clear sound with high efficiency and low distortion. With an impressive output of 160W per channel for left and right speakers plus 220W for the subwoofer, it provides deep bass and rich stereo sound.

Equipped with Bluetooth 5.0, the ZK-HT21 allows stable and fast wireless audio streaming from smartphones, tablets, laptops, and other Bluetooth-enabled devices. The amplifier supports both wired and wireless inputs, making it versatile for multiple audio setups. Its compact PCB design makes it ideal for custom enclosures, active speaker systems, and DIY home theater builds. This amplifier board is engineered for reliable performance, efficient heat dissipation, and consistent audio quality, making it a great choice for audio enthusiasts and hobbyists looking to build a high-power 2.1 channel sound system.

Specification :

• Amplifier Chip : TDA7498E
• Audio Channels : 2.1 Channel (Left + Right + Subwoofer)
• Output Power : 160W × 2 (Stereo) + 220W (Subwoofer)
• Bluetooth Version : 5.0
• Input Modes : Bluetooth / AUX
• Operating Voltage : DC 24V – 36V
• Speaker Impedance : 4–8Ω
• Efficiency : Up to 90%
• Application : DIY Audio, Home Theater, Active Speakers