Litomysl organ virtual model, only the Dry variant.
6-channel Surround variant of the sample set. Complete organ, 3 manuals, pedal, 47 stops. Works in Hauptwerk 4.2 and newer. (Limitation: Unterwerk and Pedal sound in 4 channels. Purchase vol.2 for the additional 2 channels.)
Direct channels of the Unterwerk and Pedal to complete the vol.1. Not a stand-alone sample set. Download and install vol. 1 first!