2. High- chip resistors are used, with ±1% tolerance five-ring metal film resistors for the main circuit, ensuring excellent signal-to-noise ratio of the whole unit. 4. Equipped with fully enclosed dust-proof potentiometers for higher stability and longer service life than ordinary . 1. Adopts TDA7498E and TL072 chips. 3. The PCB is made of 1.6mm thick double-sided board with 2.0oz copper thickness and full tin-spraying process, guaranteeing good current-carrying performance for both large and small currents. 5. Uses red-ring high-current inductors to deliver crisp and powerful sound output.
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