Packing List:
| Name | Specification | Code | Quantity |
| Resistor | 10K ohm | R1,R2 | 2 |
| Monolithic Capacitor | 0.1uF | C6 | 1 |
| Monolithic Capacitor | 0.47uF | C4,C5 | 2 |
| Monolithic Capacitor | 1uF | C1,C2,C3 | 3 |
| Electrolytic Capacitor | 470uF/16V | C7 | 1 |
| Potentiometer | Duplex 50K ohm | VR1 | 1 |
| IC | PAM8403 | U1 | 1 |
| PCB | 42*31mm | 1 | |
| Wire | Red 0.6m | 2 | |
| Wire | Black 0.6m | 2 | |
| USB Wire | 1m | 1 | |
| Audio Wire | 1m | 1 | |
| Loudspeaker | 4 ohm/3W | 2 |
Notice:
1.The limit operating voltage of the chip is 5.5V;if uses battery for power supply,the total
voltage should not be over 5.5V,or it will cause damadge to the chip.
2.Since there is great gain in the digital volume control of the chip,please don't let input
signal too large to cut the amplitude limit when increasing its volume,or it will lead to
sound distortion or even destroy the chip.
v
| 1 | C1, C2 | 0.47µF | C_0805_2012Metric | 2 | ||
| 2 | C3 | 0.1µF | C_0805_2012Metric | 1 | ||
| 3 | C4 | 10µF | C_0805_2012Metric | 1 | ||
| 4 | C5 | 100µF | C_0805_2012Metric | 1 | ||
| 5 | C6 | 1µF | C_0805_2012Metric | 1 | ||
| 6 | R1, R2 | 20KΩ | R_0805_2012Metric | 2 | ||
| 7 | R3 | 10Ω | R_0805_2012Metric | 1 | ||
| 8 | R4 | 1Ω | R_0805_2012Metric | 1 | ||
| 9 | U1 | PAM8403 | SO-16_3.9×9.9mm_P1.27mm | 1 | ||
| 10 | RV1, RV2 | 10KΩ | Potentiometer_Bourns_3266W_Vertical | 2 | ||
| 11 | J2, J3, J5 | Conn_01x02_Male | PinHeader_1x02_P2.00mm_Vertical | 3 | ||
| 12 | J1 | Conn_01x04_Male | PinHeader_1x04_P2.00mm_Vertical | 1 | ||
| 13 | J4 | Conn_01x05_Male | PinHeader_1x05_P2.00mm_Vertical | 1 |