From the outside very little will look to have changed except the “II” addition to the labels. Inside it is a different matter because developments and ideas from the Research and development of the higher ranges have trickled down and been utilised in some creative ways.
Some of the changes include:
• Increased asymmetric shielding,
• Multiple new dielectrics (that insulate while improving sound quality),
• Internal structural changes with geometry tweaks that remain invisible externally
• Conductor changes