Cart

Audio Amplifier Module ZK-AS21 2G Second Generation Upgraded Version 2.1 Channel TPA3255 Bluetooth Digital Amplifier Board

Selected market: United States (US)
43.70 - 50.20 $
Choose an option:
Selected option
Choose an option:
Service commitment
Shipping: $8.33
Delivery: Aug 19 - 25, item ships within 12 days
📦 Ships from: China (CN) → US 🚚 Estimated delivery: 7 days
🌍 Route note: local import, VAT, customs or handling rules may apply according to the destination country.
Return&refund policy

Eligible items are covered by return and refund support. If the item does not arrive or is not as described, the buyer can request help.

Security & Privacy

Safe payments: We do not share your personal details with any third parties without your consent.

Secure personal details: We protect your privacy and keep your personal details safe and secure.

🔒 Secure checkout available in cart and checkout.

AI offer for your market

AI

A curated pick based on category, shipping route, delivery speed and popularity in your selected market.

Why this product fits your market

  • • Estimated delivery: 7.
  • • Strong customer signal: 5.0★ from 2 reviews.
  • • Recommendations focus on this product category and your market availability.

Product specifications

Brand
diymore
Sales
10
Package size
14 × 13 × 3 cm
Package weight
0.44 kg
Rating
5.0 / 5
Reviews
2
Color
no case
Color
With case
Color
Lead type

Detailed product description

This product is shown with available options, market-specific pricing and verified specifications.

Key information
  • Brand: diymore
  • Sales: 10
  • Package size: 14 × 13 × 3 cm
  • Package weight: 0.44 kg
  • Rating: 5.0 / 5

Before adding to cart, choose an available option and check the quantity.

Product parameters

Product name: 2.1 channel Bluetooth audio amplifier module

Product model: ZK-AS21 second generation

Input method: AUX + Bluetooth + USB disk + USB sound card (dial button to switch mode and songs)

Amplifier chip: TPA3255

Bluetooth version: 5.1

Audio output: 2.1 channels (left channel + right channel + subwoofer)

Power output: left and right channels ≤220W, subwoofer ≤350W

Voltage gain: 30dB

Applicable power supply: DC16-38V, ≥10A

Applicable Speaker

Left and right channels 30-220W, 3-8Ω

Subwoofer 30-350W, 2-8Ω

Protection mechanism: anti-reverse connection, undervoltage, overheating, overcurrent, short circuit protection (can be automatically restored without restarting)

Switch mode: mechanical switch (no need to press and wait)

Product size

Integrated: 141x132x27mm

Lead type: 123x132×18mm

Tips

1. Only when the audio signal input is large enough and the power supply voltage/current is large enough, there will be enough output power!

2. The higher the power supply voltage, the greater the output power, and the smaller the speaker impedance, the greater the output power!

3. Make sure that the power of the adapter power is greater than the actual working power of the amplifier!

Product list

1X audio amplifier module (Note: the knob accessory or shell version needs to be installed by yourself)

1X screwdriver