It is important that you have your instrument tuned at least twice a year. Apart from the fact that a well-tuned instrument sounds better and that a regularly performed corrections ensures a longer life of the pinblock, it is also important to retain your right to a full warranty after the purchase of a piano or grand piano.
Regular maintenance of the mechanism is very important when you play a lot and in general it guarantees optimal playing pleasure.
For Bol & Sanders in Amsterdam you can call 020 671 91 67, or mail to marina@bolpianos.nl.