1. Unpretentious And Pure Quality; Using High-Quality for Original-Parts Not Only Guarantees Safety And Quality And Long Service Life, But More Importantly, It Is A Strong Guarantee That The Actual Performance Can Meet The Design Goals. 2. The Main Filter Capacitor Adopts Imported Audiophile-Grade Elna With A Capacity Of 3300uf*4 And Adopts 2a And Above Rectifier To Ensure A Strong And Continuous Power Supply. The Resistor Is A Five-Ring Metal Resistor, And The Main Circuit Uses A Five-Ring Metal Film Resistor With An Accuracy Of ±1%, Ensuring A Good Signal-To-Noise Ratio Of The Whole Machine. 3. The Pcb Uses 1.6mm Thick Double-Sided Sheets, 2.0 Oz Copper Thickness, And Full Tin Spraying Process To Ensure Good Passing Performance Of Large And Small Currents. Top-Notch Pcb Quality. Using A Fully Enclosed Dust-Proof Potentiometer, The Performance Is More Stable And More Durable Than Ordinary Potentiometers. 4. The Wiring Layout Of The Entire Circuit Board Is Quite Rigorous And Reasonable, And The Overall Pcb Wiring Adopts A One-Point Grounding Method. The Work Is Stable And Reliable, The Low Frequency Is Steady And Powerful, The Signal-To-Noise Ratio Is Excellent, And The Dynamic Range Is Wide 5. The Details Are Clear, The Transient Response Is Excellent, And It Can Play All Kinds Of Music With Ease, And It Performs Very Well In A Home Playback Environment. This Board Has A Treble And Midrange Pass-Through Switch Class A Parallel Regulated Regulated Power Supply Has The Characteristics Of High Speed, Low Noise And Low Internal Resistance. In Terms Of Noise, Music Detail And Sense Of Extension, It Is Unmatched By A Series Regulated Power Supply. The Performance Of The Series-Connected Regulated Power Supply For Dynamic Loads Is Not As Good As That Of Parallel Connection, Because The Conduction Degree Of The Regulating Tube Is Very Low WhenThe Series-Connected Power Supply Is No-Load, Which Is Similar To Class B. For Dynamic Loads, The Constant Current Source Of The P