Growing uniform carbon nanotubes across a 12x12 inch motherboard is currently impossible. CNTs grow at extreme temperatures (700°C+) which would vaporize the rest of the board. Manufacturers would need to build the PCB around pre-grown nanofilms.
This guide explains what an audio driver is for a Nanotech-brand motherboard (generic guidance applicable to similarly named or niche motherboards), how to identify, download, install, update, troubleshoot, and optimize it, plus advanced tips for developers and integrators. Use the sections most relevant to your goal. nanotech motherboard audio driver
NanoSonic Impedance Matching & EMI Shielding (Driver-Integrated) Growing uniform carbon nanotubes across a 12x12 inch