Paganini's signature violin, Il Cannone fabricated in 1742 by Giuseppe Antonio Guarnieri del Gesù, was his favourite. He named it "The Cannon" because of the powerful and explosive resonance he was able to produce from it. Its strings are nearly on the same plane, as opposed to most violins, the strings of which are distinctly arched to prevent accidentally bowing extra strings. The stringing of Il Cannone may have allowed Paganini to play on three or even four strings at once. Il Cannone is now in the hands of the City of Genoa, where it is exhibited in the town hall. It is taken out and played by its curator once monthly, and periodically loaned out to virtuosi of today.
I enjoy watching violinists on Youtube playing Paganini's Caprices. Here is Jascha Heifetz , one of my favorite violinist (I will feature him soon here) playing the Paganini Caprice #24. Enjoy!