The U4 Upright Piano Add-On from Pianoteq features a modeled version of an upright piano, with twenty-one presets that emphasizes the characteristics of this instrument. Presets include Honky Tonk, Vintage, Detuned, Ruined, Bierkeller, Tacky, Wavy, Weathered, Club, and more.
Various virtual microphone positions can be employed and in the microphones section (Standard and Pro version) the distance to the nearest wall can be set, with the microphones and the lid positioned in a variety of ways. The add-on requires Pianoteq version 4.5 or above.