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ZK-TB21 Bluetooth Amplifier Board, 2.1 Channel 50W×2 + 100W Subwoofer | Class D Audio Amp Module with Dual TPA3116D2 HiFi Chips, Treble & Bass Control, AUX Input, DC 12-24V for DIY Speakers - color: ZK-TB21

ZK-TB21 Bluetooth Amplifier Board, 2.1 Channel 50W×2 + 100W Subwoofer | Class D Audio Amp Module with Dual TPA3116D2 HiFi Chips, Treble & Bass Control, AUX Input, DC 12-24V for DIY Speakers - color: ZK-TB21

$31.52 USD
$31.52 USD
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About this item

  • True 2.1 Channel Sound: Stop settling for flat, bass‑less audio. This 2.1 channel amplifier delivers 50W×2 for crystal‑clear left/right stereo plus a dedicated 100W subwoofer channel – 200W total peak power. Powered by dual TPA3116D2 HiFi chips with AM interference suppression, it delivers room‑shaking bass and pristine highs. Perfect for DIY home theaters, gaming setups, and custom speaker builds.
  • Dual TPA3116D2 HiFi Chips: At the heart of this board are two original TPA3116D2 Class D amplifier chips from Texas Instruments. With THD ≤ 0.1% and a modulation frequency up to 1.2MHz, you get studio‑grade sound quality – clean vocals, tight bass, and detailed highs. The advanced AM interference suppression ensures noise‑free audio even in crowded wireless environments.
  • Bluetooth 5.0 + AUX Input: Stream wirelessly from your phone, tablet, or laptop via Bluetooth 5.0 with a stable range of up to 49 feet (15 meters) in open space. Prefer a wired connection? Use the 3.5mm AUX input for zero‑latency audio from your TV, PC, CD player, or gaming console. Two versatile input options – you'll never be stuck without a way to play.
  • Full Tone Control: Take complete command of your sound with dedicated knobs for bass, treble, subwoofer volume, and subwoofer frequency. Boost the lows for action movies, dial in the perfect crossover point for your subwoofer, or fine‑tune the highs for vocals. No apps, no menus – just instant, tactile control that puts you in the audio engineer's seat.
  • Multi‑Layer Safety Protections: Engineered with comprehensive protection circuits including over‑voltage, under‑voltage, over‑heat, short‑circuit, and reverse polarity protection. Wide DC 12‑24V input compatibility (24V recommended for full 200W output) gives you flexibility with power supplies. Heavy‑duty copper DC connectors and fence‑type terminals handle high current without overheating.

Overview

  • Manufacturer: MELIFE
  • Maximum Supply Voltage: 24 volts_of_direct_current
  • Minimum Supply Voltage: 12 volts_of_direct_current
  • Brand: MELIFE
  • Number of Channels: 3

Low stock: 10 left

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Reviews

  • ⭐⭐⭐⭐⭐

    Emily R.
    Austin, Texas
    Stagevera made it easier to find the equipment we needed for a small community performance. The categories were clear, and comparing different stage and audio accessories felt straightforward.

  • ⭐⭐⭐⭐⭐

    Daniel M.
    Orlando, Florida
    I liked being able to browse lighting, sound, stands, cables, and transport supplies in one place. It helped me organize a complete setup without jumping between unrelated stores.

  • ⭐⭐⭐⭐⭐

    Rachel T.
    Columbus, Ohio
    The product selection feels practical for schools, venues, and smaller event teams. I was able to narrow down the right accessories by checking the specifications and compatibility details.

  • ⭐⭐⭐⭐⭐

    Marcus L.
    Phoenix, Arizona
    Stagevera has a good mix of performance equipment and behind-the-scenes essentials. The collection layout made it simple to find both stage hardware and storage products.

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Frequently Asked Questions

What types of products does Stagevera sell?

Stagevera offers equipment and accessories for stages, theaters, performances, presentations, schools, houses of worship, DJs, and event venues. Our collections include stage lighting, PA speakers, microphones, stands, backstage supplies, presentation equipment, cables, cases, storage, and transport products.

How can I check whether a product is compatible with my equipment?

Review the product description, dimensions, connector type, voltage, power rating, mounting method, supported frequency, and other specifications before ordering. Products that look similar may use different connectors or technical standards. Contact us before purchasing when compatibility remains unclear.

Are cables, stands, adapters, or mounting hardware included?

Included components vary by product. Please check the product page carefully to see what is supplied in the package. Accessories shown in product images may be used for demonstration and may not always be included unless specifically listed.

Can I use the electrical products outside the United States?

Some products may be designed for particular voltage, frequency, plug, or wireless standards. Confirm the electrical specifications and local compatibility before ordering or using the product. A plug adapter alone does not convert voltage or guarantee safe operation.

Do stage lights and audio equipment require professional installation?

Some products can be used in simple portable setups, while overhead lighting, permanent speaker mounts, power distribution, and complex audio systems may require experienced or qualified installation. Always follow the manufacturer’s instructions and applicable venue and safety requirements.

How long will it take for my order to arrive?

Processing and delivery estimates may vary according to the product, destination, carrier, and availability. The estimated delivery information available during checkout or in your order confirmation should be reviewed before completing your purchase.

How can I track my order?

When tracking information becomes available, it will generally be sent to the email address used for the order. Tracking activity may take additional time to appear after a shipping label has been created or the parcel has been transferred to the carrier.

Can I change or cancel an order after placing it?

Contact us as soon as possible after placing your order. We will review the request, but changes and cancellations cannot be guaranteed once processing or shipment has started. Confirm product specifications, quantity, color, and delivery details before submitting the order.

What should I do if my order arrives damaged or incomplete?

Contact us promptly with your order number, a description of the issue, and clear photographs of the product, packaging, shipping label, and received contents. Keep all original packaging while the issue is being reviewed, as additional information may be required.

What is Stagevera’s return policy?

Return eligibility depends on the product’s condition, return timing, and the requirements stated in our Return & Refund Policy. Items should not be installed, modified, damaged, or used beyond what is reasonably necessary to inspect them. Review the full policy before starting a return request.

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