ZK-AS21 TPA3255 Bluetooth 5.1 Power Amplifier Board
Usually $31.99
Price checked today at 01:00 CT
Building your own high-fidelity 2.1 sound system just got a lot more powerful and flexible.
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Our read on this product
This isn't just a power amplifier board; it's the heart of a custom audio system you can build yourself. It uses serious Texas Instruments TPA3255 chips, which means you get that HiFi sound quality without needing a massive, expensive component. The real magic is in its flexibility – you can connect via Bluetooth, AUX, or even a USB drive, and the app control lets you tweak settings like the Bluetooth name and password, which is a nice touch for a DIY project.
The inclusion of robust protection circuits – short circuit, overcurrent, and overheating – means you can push this board without constant worry. It’s designed to self-protect and recover, which is crucial when you're building something yourself and want it to last. This board solves the problem of wanting high-fidelity, powerful 2.1 audio without being locked into a pre-built system, letting you integrate it into exactly the speakers you envision.
What makes it stand out
- Uses high-end TPA3255 chips for true HiFi sound, unlike basic amplifier modules.
- Offers app control for Bluetooth name/password customization, a feature rarely found on comparable boards.
- Provides a flexible 2.1 channel output configuration for custom subwoofer integration.
- Includes advanced safety protections like overcurrent and overheating shutdown, which are often omitted on simpler designs.
When this isn't the right fit
- This board requires a separate power supply (DC 16-38V, ≥10A) and speakers, which are not included.
- While it offers app control, some advanced customization options might require a deeper understanding of audio electronics.
- This is a component for DIY projects, not a plug-and-play solution for immediate audio needs.
Real-world notes
- The sheer output power (220W+220W+350W) is noticeable, especially when paired with appropriate speakers.
- Owners often appreciate the stability and extended range of Bluetooth 5.1 for wireless audio streaming.
- The comprehensive protection mechanisms provide peace of mind during demanding use or unexpected power fluctuations.
This board makes the most sense when you're serious about building a powerful, customizable 2.1 audio system from the ground up.
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