1. Made with high-quality materials for reliable performance. 2. Features an RFI filter for DC circuits, using two 50A bridge rectifiers and four 35V 2200µF capacitors to filter AC ripple from the DC supply, helping reduce transformer magnetic saturation, excessive no-load current, and audible hum. 3. Includes differential-mode filtering with two differential-mode inductors to suppress high- and medium-frequency interference on the AC supply. 4. First-stage common-mode filtering using X2-rated capacitors and a common-mode choke. 5. Dual-stage common-mode filtering (two-section design) provides enhanced noise suppression, particularly effective against fast transient burst interference with repetition frequencies in the kilohertz range. Product Parameters: Name: Power Filter for Audio Amplifiers Input Voltage: Single-phase AC 110–250 V Output Voltage: Single-phase AC 110–250 V Rated Load Current: 4 A Input Port: Three-wire 7.62 mm terminal block Output Port: Two-wire 7.62 mm terminal block Color: Black Material: PCB + Electronic Components Note: Slight variations in appearance or labeling may occur between production batches; these do not affect functionality. Package Contents: 1 × Power Filter Note: The actual product color may vary slightly due to lighting conditions and display settings. Measurement tolerance: ±1–3 cm.