Line 6 is a digital guitar, or rather, the signal was processed digitally (since it's final output is analog), ergo there will be a sample rate. and bit rate of how it was processed.

Does anyone know the sample rate and bit rate of the variax?

Also, what is the impedance level of the variax? Just instrument level, or line level? Just wondering if it would be more appropriate to throw it into a DI box before an audio interface.