Model: Upgraded HSH guitar pre-installed guard set. Material: Alnico 5 pickups, imported copper wire. (K resistors are for reference only and will vary with temperature). Potentiometers: 3 CTS 500K potentiometers, 1V 2T. Switches: 4 single-cut switches; 1 boost switch. Capacitors: 2 orange capacitors. In addition to the original functions, four single-cut switches and an enhanced switch bring new functions. With the single-cut switch on, if the single-cut does not sound good, it may be better to use the compensation switch.