iMac or iPad Pro Headphone Sound Quality

I have the Oppo Pm1 Headphones that are very easy to drive and the Oppo Ha1 Amplifier. I use Tidal master quality through my iMac using WiFi with a USB A to B from the back of the Mac to the back of the Amp
.Will the sound quality be any better or worse just using my IPad Pro Using the USB Port on the front of the Amp to lighting cable connection on the iPad Pro.