A 64ft organ stop goes down to 8Hz, but your DAC might not. Attempting to play extremely low bass too loud is an easy way to damage speakers/headphones, and mos

A 64ft organ stop goes down to 8Hz, but your DAC might not. Attempting to play extremely low bass too loud is an easy way to damage speakers/headphones, and most people don't have rotary woofers, so it's common for playback equipment to filter everything below 20Hz. Audacity can generate sine waves of arbitrary frequency, but take care not to set the volume too high and break things if you want to experiment.