He forgot to mention "remastering", where great old recordings are piped through a compressor to end up sounding just like today's shite. This is especially ironic for Beatles recordings. The Beatles and George Martin went to great lengths and used a lot of tricks to get the maximum dynamic range out of the primitive recording equipment of the day, and largely succeeded. Only to have the life squashed out of it by money-grubbing record companies who want to sell you the new "remastered" (ruined) version. The original Beatles recordings sound much better, especially the CDs; if you have them, hold on to them !!!