100W TDA7293/7294 Power Amplifier Board – DIY Speaker Module

100W Digital Power Amplifier Board – TDA7293 / TDA7294 Single Channel DIY Module

Build your own high-performance audio system with this 100W Digital Power Amplifier Board. Based on the industry-trusted TDA7293 or TDA7294 chip (shipped randomly), this single-channel mono amplifier module is engineered for stability, clarity, and serious output power — perfect for DIY speaker projects and custom audio builds.

⚠️ Important Notes Before Ordering:

• This product ships as loose/unassembled parts — soldering and assembly are required.
• The chip supplied (TDA7293 or TDA7294) is selected randomly per shipment.
• No circuit diagram or technical consultation is included; component labels are marked clearly on the PCB.
• A 3-wire transformer (AC dual 12–32V) is required — do NOT use DC power or batteries.
• You must attach a heatsink yourself before powering on.
• Parts are tested before shipping; free repairs are not provided.
• Product appearance and component sourcing may vary slightly between batches while maintaining equal or better quality.

Key Features

• Official Standard Circuit: Proven, stable, and reliable circuit design.
• High-Capacity Filtering: Large electrolytic capacitors rated at 50V / 2200µF for clean power delivery.
• Flexible Supply Voltage: Dual 12–36V AC input; dual 32V recommended for best performance.
• Impressive Output: 85W rated (no distortion) with 100W peak power.
• Compatible with 100W+ Speakers: Drives speakers with 4–8 ohm impedance effortlessly.
• Compact PCB: 50 × 50 mm board — easy to integrate into custom enclosures.

Specifications

What's in the Box

• 1 × Amplifier Board (unassembled kit, loose parts)

Explore More DIY & Craft Essentials

Looking for storage solutions for your components? Check out our Airtight Transparent PET Storage Bottle | Beads & Crafts. For other precision tools, browse our Leather Hole Punch Tool | DIY Stitching Punch 4/5/6mm and our Stainless Steel Ceramic Trimming Tool – Curved Skip Knife.

Learn more: OSHA on eye and face protection

Frequently Asked Questions

Q: Is the 100W amplifier board pre-assembled and ready to use?

A: No — this is a DIY kit sold as loose, unassembled components. You will need to solder all parts onto the PCB yourself. It is designed for hobbyists and electronics enthusiasts with soldering experience. Component locations are clearly marked on the board.

Q: Which chip will I receive — TDA7293 or TDA7294?

A: The chip is selected randomly from available stock. Both the TDA7293 and TDA7294 are compatible with the same PCB layout and deliver equivalent performance at 85W rated / 100W peak output, so either chip will work correctly in your build.

Q: What power supply do I need for this amplifier board?

A: You must use a 3-wire AC transformer with a dual (split) 12–36V output. A dual 32V toroidal transformer is recommended for optimal power output. Do NOT use DC power supplies or batteries — this board is designed exclusively for AC transformer input.

Q: Do I need a heatsink?

A: Yes — attaching a heatsink to the TDA7293/7294 chip is mandatory before powering the board. Running the amplifier without proper thermal management will damage the chip. A heatsink is not included and must be sourced separately.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.