PIA-SW-BASE

OLD PIANO/PIANISSIMO Swivel Base (single axis)

This spare part is still available for purchase, but it’s hardly advised to order the “2AX” upgrade kit:

KIT-2AX-PNI (PIANISSIMO)
KIT-2AX-PIA (PIANO).

Video presentation:
https://www.youtube.com/watch?v=-wrzcO3qjbc