Dear Paolo Ferrarelli,
watching the video on upright action, at the point where you speak about the differences between the upright action and that of the grand piano,
you show a collection of particular actions. The two large families that it was possible to outline were two:
those with a single spring and those with two springs (one for the jack and the other for the repetition lever)
I am very interested in purchasing a double-spring action. Could you tell me how and where I might be able to purchase
these unusual actions?
Thank you for your attention
