| Feature | Details |
| Amplifier Chip | Genuine TPA3116 Digital IC |
| Output Power | 50W + 50W (Stereo) |
| Bluetooth Version | 5.0 High-Fidelity |
| Operating Voltage | DC 12V – 24V |
| Audio Input | Bluetooth + 3.5mm AUX + USB (PC/Flash) |
| Protection | Short-circuit, Overheat, and Over-voltage |
Ultra-Compact Power for High-Fidelity Audio The GOLD AP55 TPA3116 Mini Digital Amplifier Board is a masterclass in compact audio engineering. Despite its small "mini" footprint, it utilizes the powerful TPA3116 digital amplification chip to deliver a robust 50W per channel. At Robogears, we recommend this board for users who want to create high-quality desktop audio setups, bookshelf speaker systems, or custom DIY Bluetooth speakers without the bulk of traditional amplifiers.
Multi-Mode Input Versatility One of the standout features of the AP55 is its versatility. Beyond the high-speed Bluetooth 5.0 wireless connection, it also supports a standard 3.5mm AUX wired input and a USB interface. The USB port allows the board to act as an external sound card for your PC or play music directly from a flash drive. This makes it a perfect all-in-one solution for your home office or workshop audio needs.
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Gold-Standard Performance and Protection Part of our "Gold" series, this board is built with premium surface-mount components and high-quality inductors to ensure a clean signal-to-noise ratio. The digital Class-D architecture ensures over 90% power efficiency, allowing it to run cool even during high-volume playback. It also comes equipped with an onboard volume knob that doubles as a mode selector, giving you full control over your audio environment in a single, sleek package.
Note: The product images provided are for illustration purposes only. The actual product may vary slightly in terms of design, color, or component layout due to manufacturing updates, but technical specifications will remain as described.
Key Highlights:
Dual 50W Output: Drives 4-ohm to 8-ohm passive speakers with ease.
TPA3116 High-Performance Chip: Delivers rich, detailed sound with deep bass and clear highs.
Bluetooth 5.0: Fast, stable pairing with a range of up to 15 meters.
Multiple Power Options: Works with standard 12V to 24V DC power adapters.
Minimalist Design: Small enough to be hidden inside custom speaker enclosures.
Product Model: GOLD AP55
Amplification Class: Class D
Output Impedance: 4$\Omega$ to 8$\Omega$
Frequency Response: 20Hz – 20kHz
Supply Voltage: DC 12V – 24V (3A - 5A recommended)
Audio Inputs: Bluetooth, AUX, USB
SNR: 102dB
Dimensions: ~52mm x 52mm x 18mm
Power Tip from Robogears: To achieve the best sound quality and the full 50W output, we suggest using a 24V 5A DC power supply. If you are using a 12V battery or adapter, the output will be approximately 15W-20W per channel, which is still excellent for small desktop speakers.