Hi-res (high-resolution) audio is any audio file format that surpasses CD (compact disc) quality, which is 16-bit audio depth and 44.1 kHz sample rate.
You can listen to hi-res Bluetooth®audio with aptX Adaptive up to 24-bit/48kHz on your MW75 headphones when connected to a compatible source device.
You can listen to hi-res USB-C Digital audio up to 24-bit / 96kHz on your MW75 headphones when connected to a compatible source device by USB-C to USB-C.
Hi-res audio requires a hi-res audio file or a streaming service that supports hi-res audio.