Less common, but some vinyl rips or bad digital conversions include a DC offset (the waveform is not centered on zero). This wastes amplifier headroom and can cause your subwoofer cone to sit "pushed out" during quiet parts, reducing excursion capability for the actual bass hits.
Most amateur rips of this song are driven into the red. Look at the waveform in Audacity or Ocenaudio. If the top of the wave is flat (square-shaped) rather than rounded, the file is clipped. Clipping introduces high-frequency harmonic distortion. Ironically, this makes the bass sound "farty" or harsh instead of cleanly rumbling. flac bassotronics bass i love you fix
The fix applies a multiband compressor only to the 20-50Hz region. Less common, but some vinyl rips or bad