YIMA TECH has been quietly building a reputation for affordable, high-performance class-D amplifiers. The A07 Pro takes their formula and refines it with a dedicated 3.5mm subwoofer output that now follows the main volume control. This is a practical upgrade for anyone building a 2.1-channel system for movies or music.

The TPA3255 chip delivers clean, low-distortion power. With a 48V DC power supply, this amp pushes 300W into 4-ohm loads. It runs cool enough to tuck into a tight media cabinet without worrying about overheating. The NE5532 dual op-amp is socketed, so you can swap it for a different flavor if you enjoy tinkering. Bluetooth 5.2 handles wireless streaming with stable, low-latency connection.

At 6.6 inches wide and just over an inch tall, the chassis is compact. The 230V input is fixed, so check your local power before buying. The amp lacks any tone controls or DSP, so you are relying entirely on your source and speakers for sound shaping. This is a straightforward, no-frills amplifier that prioritizes clean amplification over convenience features.