We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green circuit board with silver components and black connectors

Vszerda

Vszerda ZK-MT21 2.1 Channel Subwoofer Amplifier Board

SKU CH-WXHA-RBA0X

Bluetooth-compatible 2.1 channel amplifier board drives a subwoofer and two satellite speakers

  • Bluetooth-compatible 2.1 channel audio streaming
  • Dedicated subwoofer output for deeper bass
  • 21 W per channel powers stereo speakers
  • Compact amplifier board for DIY audio projects

Vszerda ZK-MT21 Amplifier Board

The Vszerda ZK-MT21 is a Bluetooth-compatible 2.1 channel subwoofer amplifier board designed for compact audio projects. It provides a two-channel stereo output alongside a dedicated bass channel for enhanced low-frequency response. Hobbyists and DIY builders can integrate this board into custom speaker systems or upgrade existing audio equipment with wireless streaming capability. The board arrives new and ready for installation into a suitable enclosure.

Suits DIY audio builders needing wireless 2.1

This board suits makers assembling a compact 2.1 speaker system with Bluetooth input. It is not for users who require a complete finished speaker with enclosure and drivers included. Buyers needing higher power ratings or specific audiophile-grade components should look at dedicated amplifier modules. Installers without soldering equipment or electronics experience may find integration challenging.

Highlights

  • Bluetooth-compatible 2.1 channel audio streaming
  • Dedicated subwoofer output for deeper bass
  • 21 W per channel powers stereo speakers
  • Compact amplifier board for DIY audio projects

Specifications

No published specifications for this item yet.

Questions about this item

What speakers do I need to connect to the 2.1 channel outputs?

You need two satellite speakers for the left and right channels plus a passive subwoofer for the dedicated bass output.

Can I keep my existing passive bookshelf speakers and only add the subwoofer channel?

Yes, the board drives two full-range channels and a separate subwoofer channel, so your current passive speakers can stay on the left and right outputs.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.