Features:

1. Using TDA7498 TL072
2. Main filter capacitor adopts special electrolytic capacitor capacity 2×2200UF
3. Resistor uses high-precision chip resistors to ensure a good signal-to-noise ratio
4. The PCB adopts 1.6mm thick double-sided plate, 2.0oz thick copper, and spray tin process to ensure good current performance.
5. Red ring high current inductor ensures crisp and powerful sound.