Audio & Amplifier Boards

Whether you're building a hi-fi stereo system from scratch, upgrading your DJ mixer, or engineering a custom speaker cabinet, our Audio & Amplifier Boards collection has everything you need. Explore a curated range of high-quality electronic components including digital amplifier boards, speaker crossovers, signal isolators, sliding faders, motorized potentiometers, Bluetooth decoder modules, and much more. Designed for DIY enthusiasts, audio engineers, and hobbyists alike, these components deliver professional-grade performance at an accessible price point.

Why Shop Our Audio & Amplifier Boards?

• Wide Selection: From compact signal amplifier modules to full-featured crossover boards, we carry components for every stage of your audio build.
• DIY-Friendly: All components are designed with makers in mind — clear pinouts, standard footprints, and broad compatibility.
• Quality Components: Sourced from reputable manufacturers to ensure low noise, accurate frequency response, and long-lasting reliability.
• Versatile Applications: Suitable for home audio, car audio, studio equipment, PA systems, DJ setups, and experimental electronics projects.

Featured Products

Kick off your next build with some of our most popular components:

• 2.0 Channel Digital Amplifier Board 2×50W DC 12V–25V — A powerful stereo amp board perfect for bookshelf speakers or car audio systems, delivering up to 50W per channel.
• 3-Way Electronic Crossover Board 6-Channel Stereo DIY Audio — Precisely splits your audio signal into highs, mids, and lows for a cleaner, more defined soundstage.
• 5-Pack Bluetooth 5.0 MP3 Decoder Board – DIY Audio Module — Add wireless audio streaming to any project with this easy-to-integrate Bluetooth 5.0 receiver module.
• 2-Channel Passive Audio Isolator | 6.5mm & XLR | HpLive — Eliminate ground loop hum and interference in live or studio environments with this passive dual-channel isolator.
• 128mm B10K Sliding Fader 8-Pin T-Handle | Audio Mixer — A smooth, precision sliding fader ideal for audio mixer repairs or custom console builds.

Explore the Full Collection

Beyond amplifier boards and crossovers, our collection also includes specialty parts like 30W LM1875 Audio Amplifier Boards for vintage-style single-channel builds, 4-Gang Motorized Potentiometers for remote-controlled volume systems, and 2-Way/3-Way Speaker Crossover PCB Boards for passive speaker builds. No matter your project complexity, you'll find the right piece here.

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Frequently Asked Questions

Q: What is an audio amplifier board and how do I choose the right one for my project?

A: An audio amplifier board is a pre-assembled PCB that boosts a low-level audio signal to drive speakers. To choose the right board, consider the output power (watts per channel), operating voltage (e.g., DC 12V–25V), number of channels (mono, stereo, or multi-channel), and the impedance of your speakers (typically 4Ω or 8Ω). Our 2×50W Digital Amplifier Board is a great starting point for most stereo applications.

Q: What does a speaker crossover board do and do I need one?

A: A speaker crossover board splits a full-range audio signal into separate frequency bands (highs, mids, and lows) and routes each band to the appropriate driver — tweeter, midrange, or woofer. If you're building a multi-driver speaker system, a crossover is essential to prevent distortion, protect drivers from out-of-range frequencies, and achieve a balanced, accurate sound. Check out our 3-Way Electronic Crossover Board for a fully active solution.

Q: What is a passive audio isolator and when should I use one?

A: A passive audio isolator uses transformer-based isolation to break ground loops — a common cause of hum and buzz in audio systems. It requires no external power and works with balanced (XLR) or unbalanced (6.5mm) connections. It's ideal for live sound setups, recording studios, or any scenario where multiple pieces of gear share the same power source and create interference.

Q: Are these audio and amplifier components suitable for beginners?

A: Absolutely! Many of our components, such as the Bluetooth 5.0 MP3 Decoder Boards and LM358 Signal Amplifier Modules, are beginner-friendly with straightforward wiring and minimal external components required. We recommend starting with a clear project goal, reviewing the datasheet for your chosen board, and working up to more complex builds as your confidence grows.

Q: Can I use these amplifier boards in a car audio system?

A: Yes! Many of our amplifier boards, including the 2.0 Channel Digital Amplifier Board, operate within the DC 12V–25V range, making them compatible with standard 12V automotive electrical systems. Always verify the board's input voltage range, power consumption, and speaker impedance requirements against your vehicle's setup before installing.