The Fosi Audio TP-02 is a compact subwoofer amplifier designed to drive passive subwoofers and bass shakers with reliable performance. At its core lies the TDA7498E chip, a class D amplifier module known for efficient power conversion and minimal heat dissipation. This mono amplifier delivers up to 220 watts of peak power, enabling it to energize a wide range of low-frequency drivers without distortion under normal operation.

The unit features dedicated volume and frequency controls, allowing precise adjustment of bass output level and cutoff frequency to suit different speaker configurations and listening environments. Constructed with a metal chassis that combines durability with thermal management, the TP-02 maintains stable operation even during extended use. Its miniature footprint makes it easy to integrate into tight spaces, such as under desks, inside entertainment centers, or alongside compact home theater setups.

The amplifier is optimized for use with powered passive subwoofers and tactile transducers, making it a versatile choice for upgrading existing audio systems or building custom low-frequency solutions. The hardware includes standard RCA inputs and speaker wire terminals, supporting simple connectivity with most audio sources and passive speakers.

Power handling is matched to typical DIY subwoofer projects, and the built-in crossover filter helps blend the subwoofer output seamlessly with main speakers. The unit operates within a wide voltage range, accommodating different regional power supplies with the appropriate adapter.

Priced very affordably, the TP-02 offers substantial value for budget‑conscious audio enthusiasts seeking to add controlled bass extension to their setups. Its straightforward design, reliable chipset, and adjustable controls make it a practical tool for enhancing low‑end response without complex installation or high upfront costs.