My computer is connected to an average HiFi and speakers (£300 &#x2F; $500 worth) with an on-board soundcard.  I didn&#x27;t need to adjust the volume to hear the whale.<p>It reminds me most of waiting on the platform of a very deep metro line, and hearing the rumbling of a different metro train, some way above.<p>That, or the (apparently reasonably authentic) sounds played in a Sea Life centre.