You didn’t specify which MacBook Pro you are now using. If it is one with the M1 processor, that is part of the answer, plus better/faster processing from the ram, storage, and input and output. Beyond that, results will vary depending on what else is connected to the Mac, and what other software is running. Changing the USB output cable to accommodate the USB C likely also contributed some to the change. Speaking from some experience going from an old Mac Mini 2011 to a new M2 Mac Mini 2023. Even with the newer processor which stepped sound quality up, a new better USB cable also made a difference.
Why did this just happen ?
Folks ,
I have been using an old (2012) iMac with a 1TB SS drive for years. It is connected to an old Benchmark USB DAC that feeds my refurbished(2X) Audio Research SP IX mark 2 preamp into my Quicksilver KT88 mono blocks that feed my Pro Ac SE’s.
I just bought a used 2020 MacBook Pro($400.00) to replace the old iMac. I connected it to my USB DAC via a usb C to usb converter.
AND BAM ! The resolution is stunning. I would equate it to a $5K upgrade in any part of my chain. It is truly an ear opener.
What did this ?
The USB C ?, The MacBook isn’t doing anything but output the data to my USB DAC.
I would love to hear from any of you who might know the reason for this wonderful improvement.
Eugene