Price last checked Nov 6, 2026. It may have changed, so confirm on the store's page. We earn a commission on purchases (details).
💕Welcome to the SKYSOUND.💕 ✨Our product quality is very good, suitable for DIY speakers, car modification, etc.✨ 🚀Shipped within 24-48 hours after ordering. 😄We support wholesale, contact us to chat. 🎉Welcome everyone to purchase! ❗❗❗Gold capacitors are genuine❗❗❗ 🌹Audio amplifier board BT 2.1 channel 100Wx2+200W 🎶Model: ZK-ST21 📢Adapted power supply: The operating voltage range is 12-30VDC. It is recommended to use a DC power supply with a voltage of 24V-28V and a current of more than 10A. 🎧Maximum power: Left or right channel - 105W@30V, 4Ω; 55W@30V, 8Ω Subwoofer - 208W@30V, 2Ω; 105W@30V, 4Ω 🔔In short, the higher the voltage, the lower the resistance and the higher the capacity. 🔥Suitable speakers Support 3-8 ohm, 100W speakers for left and right channels; support 2-8 ohm subwoofer and speakers up to 200W. 📢BT chip: JieLi 5.1,transmission distance 15 meters 🎙️Input method: BT+AUX+USB disk/sound card 🎤Number of channels: 2.1, Left and right channels+subwoofer 🔊Power AMP chip: Two original TPA3221 ❗❗❗Protection mechanism: Input undervoltage, overheating, overcurrent, shortCircuit protection. No input anti reverse protection,positive and negative poles cannot be reversed! 📐Product size : External potentiometer:121x100x25mm 📦Product weight: Integrated type without shell net weight: 192g; Total package: 228g External lead type net weight: 254g; Total package: 310g 💕Feedback: 1. Please kindly leave us a positive feedback (5 stars) , if you are satisfied with our items.🥰 2. If the product does not work or has problems, you can contact our store.😊 3. Please give us the opportunity to resolve any problem.😄