Quantum Upgrade Chip
Upgrade your QSI equipped Broadway Ltd, Atlas Gold, or Proto 2000 locos.
List $29.95

Quantum Programmer
Download sound files from your PC and program CVs. Interfaces between ...
List $99.95

Quantum Aristo
Sound decoder for Aristocraft® locomotives designed to plug into the Aristocraft motherboard common on most of their G-gauge locomotives.
List $159.95
Related: QSI Aristo Speaker Cable, QSI Steam Cam Cable, QSI Adaptor for Magnum
See also : Upgrade software item numbers and sound files.

Quantum Magnum
Universal "G" scale sound and power system designed to install into most "G" gauge locomotives. The compact size and features make this an excellent option for aftermarket installations.
List $179.95
Related: QSI Magnum Speaker Cable, QSI Steam Cam Cable
See also : Upgrade software item numbers and sound files.

Quantum HB and HP Speakers
High Bass and High Performance speakers delivering significantly better sound.
List from $9.95

Quantum GWire Receiver
Compatible with CVP Products AirWire™* wireless DC/DCC throttles ...
List $99.95

Quantum Engineer
Advanced Analog Controller. With Quantum Engineer, you can operate features that are otherwise available only in DCC plus features that are not yet available in DCC.
List $59.95

Quantum Revolution
Aftermarket HO DC/DCC Sound Decoder Systems. Quantum Revolution has been developed for installation in existing non-sound HO engines.

Quantum CV Manager
Program on the main using your Quantum Programmer and PC.

Decoder Accessories
Various accessories designed to compliment QSI decoders.

Quantum UCS-2
Development in progress.