The QSI Sound system is an excellent system that has delighted many train enthusiasts. All products have a life cycle, and many of the BLI QSI sound units are no longer available. If you own a Paragon with a QSI sound unit that has failed, or you really enjoy the Paragon 2 sound unit and additional features, you may now update the QSI sound system to a Paragon 2 system. The Paragon 2 offers 16 bit sounds, extremely slow speed operation, playable whistle with quill, 3 selectable whistles/horns, demo mode, record and play operation, adjustable sound volumes for each effect, excellent DC control and much more. The locomotive sounds used are the closest sounds for each upgraded locomotive.
We are the only authorized repair center for out of warranty BLI trains, and we are authorized to perform extra services, such as upgrading BlueLine to Paragon 2.