Agreed. Hyperion Knight playing Jesu, Joy of Man's Desiring (Bach)[0] is also a really good demonstration of the incredible clarity of the bass keys. It's really astonishing to hear. In fact I feel some of the concert pianists playing it are a little sloppy on the low notes—probably because they're not used to being judged on them! My old Wurlitzer upright could never compare :)
Listening on headphones is weird: usually, for an instrument, the sound comes from one direction. Here some notes were more in the centre, while others (lower ones) were coming from the left channel.
[0] https://www.youtube.com/watch?v=uPb2hMJ9Ojk around 3:00