Zenieth,
Whoever told you that was wrong. I called the distributor to ask them (which seems the logical thing to do to get accurate information)
The SE upgrade is $700.00
The upgrade that costs $2,000.00 is the AI upgrade to older model Capitoles, which involves adding three pairs of analog inputs (2 SE, 2 balanced), a new D/A output board with the inputs board attached, a modifiction to the power supply and a whole new back plate to allow for the new input jacks.
Big difference.