Lyele Audio Mark JC-2 Classic Circuit Class A Preamplifier Board Audiophile-grade Hifi Preamp Circuit Power Amplifier Board

Options introduction:

• A version: all the resistors are Dani resistors, the coupling capacitors use 4 Mondolfo M-CAP capacitors, and the main filter uses 16 small Nichicon KW series capacitors. Because of the number of KW series capacitors, other equivalent capacitors will be used after sale Capacitor replacement

• Version B: All the resistors are Dani resistors, the main filter capacitors use 4 Nikon KG2 series large capacitors, and the coupling capacitors only have 4 M-CAP capacitors.

Tip:

• Affected by the overall market environment, some small capacitors and resistors may be out of stock when they are used up, and can only be replaced by other brands, which may be slightly different from the pictures. Please know before placing an order to avoid unnecessary trouble. Very grateful

Product description:

• Using Toshiba FET as differential input, after first-stage voltage amplification, push the output of the last-stage gold-sealed tube

• The power supply part is first rectified, and then passed through the LC-2 filter circuit to obtain a smoother DC power to supply power to the main circuit

• There are working voltage, quiescent current, and midpoint voltage adjustment potentiometers on the board. For debugging methods, please refer to the instruction manual attached to the delivery.

• There are two installation methods for the main filter capacitor: 1. 4 large electrolytics with a diameter of 35mm can be installed, 2. 16 small electrolytics with a diameter of 18 mm can be installed

Parameter:

• Name: JC-2 Class A preamplifier board

• Distortion: ≤0.008%

• SNR: ≥108dB

• PCB thickness: 2mm

• Size:195*150*40mm

• Power supply range: Dual AC 15-22V is recommended to use dual AC 18V-20V power supply