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 TPA3118 chip, mono amplifier module for 48 ohm speaker, DC 824V input

SMUGDESK

SMUGDESK TPA3118 Mono Amplifier Board 48 Ohm 824V

SKU CH-GHXA-2B4KZ

Mono amplifier board delivers 48 ohm speaker power from DC 824V input using TPA3118 chip

  • TPA3118 chip in PBTL mode delivers stable mono amplification
  • Wide DC 824V input range allows flexible power supply choices
  • Designed for 48 ohm speakers for clear powerful output
  • Compact PCB layout saves space in DIY enclosures
  • High-efficiency digital design runs cool without large heatsinks

SMUGDESK TPA3118 Mono Amplifier Board

This compact amplifier module uses a TPA3118 chip in PBTL mode to deliver mono channel power amplification. It accepts a wide DC 824V input range, allowing flexibility with various power adapters. The board is designed specifically for 48 ohm speakers, providing clear audio output with high efficiency and low heat generation. Its small PCB layout makes it easy to embed into custom enclosures.

Suits DIY audio builders

This module is not for users needing stereo amplification or multi-channel surround sound. Buyers who require Bluetooth, Wi-Fi, or integrated DSP features should look elsewhere. It is unsuitable for driving low-impedance speakers below 48 ohms or for installations needing rack-mount chassis. Projects demanding certified safety ratings or industrial-grade connectors will not be met by this bare board.

Key spec: 48 ohm speaker impedance match

The amplifier is engineered to work with 48 ohm passive speakers, and this impedance match is the single factor that determines compatibility. Connecting speakers with a different impedance will result in incorrect power delivery and potential damage. The DC 824V input range supports multiple power supply choices, but the 48 ohm requirement is fixed. Verify your speaker specifications before purchase.

Highlights

  • TPA3118 chip in PBTL mode delivers stable mono amplification
  • Wide DC 824V input range allows flexible power supply choices
  • Designed for 48 ohm speakers for clear powerful output
  • Compact PCB layout saves space in DIY enclosures
  • High-efficiency digital design runs cool without large heatsinks

Specifications

No published specifications for this item yet.

Questions about this item

What DC input voltage range does the TPA3118 board accept?

The module operates from a DC 824V supply, letting you choose a compatible adapter for your DIY build.

What speaker impedance is this amplifier designed to drive?

It is matched for a 48 ohm passive speaker, providing clear mono output without a large heatsink.

How do I wire the TPA3118 module for mono PBTL operation?

Connect the DC supply to the input terminals, then attach the 48 ohm speaker to the mono output pads; reversing the supply polarity is the common mistake.

Also in this aisle

People compared these

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