Open the FLAC in a spectral analyzer.

The specific release labeled -corrected-l offers two major upgrades over older rips (such as the 2003 CD set or early 2010s digital transfers):

The core of the Gateway Experience is "hemispheric synchronization". ANALYSIS AND ASSESSMENT OF GATEWAY PROCESS - CIA

🚀 Wireless or Bluetooth headphones often use compression algorithms (like AAC or SBC) that can interfere with the Hemi-Sync signal.