FLAC (Free Lossless Audio Codec) is legitimately superior to MP3 when sourced from original CDs or hi-res masters. However, with unofficial “repacks”:
How to verify true FLAC quality:
Use spectral analysis software like Spek or Fakin’ The Funk. Look for frequency cutoffs at 20–20.5 kHz (good for CD FLAC) vs. sharp cutoffs at 16 kHz (MP3 transcode). aerosmith greatest hits deluxe 2023 flac repack
If you downloaded this “repack” and want to determine if it’s worth keeping:
To ensure you have the best quality (Audiophile standard), look for these specs in the file metadata or the .nfo file included with the download: FLAC (Free Lossless Audio Codec) is legitimately superior
Note: If the files are 16-bit/44.1kHz, it is the standard CD quality. 24-bit/96kHz is the "Hi-Res" version.