Mike,
what I gather from QSI's product page,
http://www.qsisolutions.com/products/q-titan.html
is that there are three versions of the Titan for G Scale Scale. The Titan Magnum, for G/O Scales, being in a universal format, (screw terminals), and the Titan-Aristo and Titan-USA being PnP respectively.
They also have a GWire-TE compatible with Aristo's Crest system.
John
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