ZK-TB21 2.1 Channel Bluetooth 5.0 Amplifier Board TPA3116D2 Chip 50Wx2+100W MAX, DC 12-24V, AUX Input, HiFi amp for Home Theater Passive Speakers Subwoofer, Treble & Bass Control

[Crystal Clear HiFi Sound with Full Adjustability] Built with the Texas Instruments TPA3116D2 chip, this 2.1 channel amplifier delivers crisp highs, clear mids, and deep lows. Independent treble, bass, main volume, and subwoofer frequency controls let you dial in the perfect sound for any speaker setupwhether it's bookshelf speakers, outdoor satellites, or a car audio system. [Powerful Output for Passive Speakers & Subwoofer] Rated at 50Wx2 for left/right channels and 100W for subwoofer (MAX), this little amp pushes way above its size. It easily drives 6.5" components, 8" subs, and 4-8 passive speakers.

Users have replaced old Bose systems and home theater receiversgetting loud, distortion-free sound even at high volume. [Plug-and-Play Setup with Bluetooth 5.0 & AUX Input] Get connected in minutes. Bluetooth 5.0 pairs instantly with your phone, tablet, or laptop and auto-reconnects. No drops, no hassle. For wired sources, just plug into the 3.5 mm AUX input. Assembly takes 5-10 minutes with the included screws. No instructions neededit's that simple. [Wide 12-24V DC Power Compatibility] Works with a variety of power sources12V to 24V DC. Use a wall adapter (15V 6.33A or 19-24V 5A+ recommended) or even a 20V drill battery for portable setups.

Higher voltage = more clean power. Just make sure your power supply has low ripple noise to keep the background hiss-free. [Compact, Heat-Sinked Design for DIY & Car Projects] Measuring only 4" x 4" with a large aluminum heatsink, this amp fits anywhereunder a desk, inside a classic car glovebox, or into a gaming chair sleeper build. Dual power input jacks (DC barrel + 2-pin terminal) give you flexible wiring options. No radio? No problem. Stream from your phone and enjoy great sound in old cars, workshops, or garages