The K121ZT -Professional Collection Our professional range of pianos, owing to longer keys, larger soundboard, and longer bass strings offer advanced control with greater sensitivity of touch, and an enhanced dynamic range, to produce a very impressive richness of sound for the discerning pianist. The exceptional clarity of pitch and superb sustain make them a delight to play. The K121 has been supplied to famous institutions like the Karlruhe Conservatoire and the Ghent Conservatoire. It is the choice of both the serious amateur and the professional. The elegant softline cabinet of the K121ZT houses an instrument which came second in overall acoustic performance only to a Steinway piano (nearly 4 times the price) in a European piano test, and was voted to be a "Best Buy" Practice pedal comes as standard; solid double brass castors.