Labels Milestones
BackA-1531 or A-557 | | J2 | 1 | AudioJack2_SwitchT | Audio Jack, 2 Poles (Mono / TS *(optional) SIP socket, 2.54 mm, 1x10 Pin header, 2.54 mm, 1x7 | | | | | | S2 | 1 | LM358 | Low-Power, Dual Operational Amplifiers, DIP-14/SOIC-14"/>