- Nanjing, Jiangsu, China
- Jan 29th
Brief Instruction: the tone board preamp, and treble, alto, bass, volume control; components carefully selected areas, the use of cost-effective than high NE5532 op amp, high-quality small potentiometer, Black Edition BP Promise coupling capacitor, 1 % metal film resistors, capacitors, etc. Philips CBB. With op amp IC package socket, flexible, easy to upgrade, suitable for different tastes.