Hello,I'm looking for good service (pcb+assembly) for our projects.First project.We need to assemble XPT8871 simple amplifier board (one s871+capacitors resistor+micro usb input+jack4pole input) 100-300 pcs sample, then 1k orders. It is generally popular XPT8871 board (audio amplifier) with added micro usbpower input and 4pole jack input. JLCPCB cannot assembly usb and jack input, so i'm looking for this service. I can send you gerber files to your to check.Best regards,Adam Michalak