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Green bare circuit board with silver audio terminals, black potentiometers, and large cylindrical capacitors

lelisten

lelisten 2.1 Channel 80W+80W/120W Pro Sound Amplifier Board

SKU CH-673E-W9TQ1

A 2.1 channel amplifier board delivering up to 80W per stereo channel and 120W bass from a 9-18V supply with 3.5mm or 2.54mm inputs

  • TypeAmplifiers
  • Delivers 2.1-channel audio with 80W stereo and 120W bass
  • Operates on flexible 9–18V DC supply for versatile installations
  • Accepts 3.5mm jack or 2.54mm terminal input connections
  • Four 3300UF capacitors and vehicle-grade chip reduce background noise
  • Built-in reverse, short-circuit, over-current and over-temperature protections

2.1 Channel Pro Audio Amplifier

This Class AB amplifier board delivers 2.1 channels of audio amplification for home or vehicle sound projects. It provides up to 2x80W stereo output at 18V into 4 ohms and 1x120W dedicated bass output at 18V into 2 ohms. The board operates on a DC 9-18V supply, compatible with 9V or 12V sources. It suits builders assembling custom speaker systems or upgrading existing audio setups.

Upgrading from basic stereo modules

The board replaces simple two-channel amplifiers when a dedicated subwoofer channel is required for deeper low-frequency response. The jump is worth it when your project demands separate bass management alongside stereo output for a fuller soundstage. It is not for installations needing more than 2.1 channels or builders requiring integrated wireless streaming or digital signal processing features.

Installing the amplifier board

Connection is straightforward using either the 3.5mm audio jack or the 3P 2.54mm terminal block for input signals. Speaker outputs support 2, 4, 6, or 8 ohm loads across the three channels. Built-in protections guard against reverse polarity, short circuits, over-current and over-temperature events. Common issues include insufficient power supply current for peak output or incorrect speaker impedance matching causing protection triggers.

Highlights

  • Delivers 2.1-channel audio with 80W stereo and 120W bass
  • Operates on flexible 9–18V DC supply for versatile installations
  • Accepts 3.5mm jack or 2.54mm terminal input connections
  • Four 3300UF capacitors and vehicle-grade chip reduce background noise
  • Built-in reverse, short-circuit, over-current and over-temperature protections

Specifications

TypeAmplifiers

Questions about this item

What DC voltage range and speaker impedances does the 2.1 channel board support?

The amplifier operates from DC 9 V to 18 V and is rated for 2 Ω, 4 Ω, 6 Ω or 8 Ω speakers on its stereo and bass channels.

Which audio inputs are provided on the board and how do they connect?

A 3.5 mm jack and a 3-pin 2.54 mm terminal header are both available; either can feed the signal into the amplifier.

What routine care will keep the four 3300 µF filter capacitors performing well?

Keep the board dry and dust-free, ensure adequate airflow around the capacitors, and periodically check that all solder joints and terminal screws remain tight.

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