Fever-grade HiFi high-fidelity high-middle-low three-way frequency, the material is real, using imported MKP audio- special capacitors, Bennick midrange capacitors. | Exquisite workmanship and premium materials, sound detail are outstanding, the sense of hierarchy- is clear, and the sound is transparent and clear. | Solder-free terminal blocks, say goodbye to traditional wiring methods, loosen the screws, insert the corresponding audio- cables, and lock the screws, making wiring more convenient and faster. | Very suitable for home theater, high, medium and low three-way DIY sound quality improvement. | Type A is suitable for speakers above 3.5 inches, while Type B is suitable for speakers above 4 inches.