These USB instruments are invariably "controller" keyboards (keyboards WITHOUT sounds built in), and are touch-sensitive for expressive playing. They are designed to link with a PC or Mac (or even i-Pads using particular lead types), with music software pre-installed.
Call us for advice or a written quotation if you are looking to fit out a Music Tech suite, as you MAY benefit by selecting a good ‘progressive keyboard’ from our galleries of portable keyboards.