Sorry for the late response Sthomas12321, I don't think there is a .v2 840c (yet), the one I was using was current.
It did not stay in my system too long as the HF were unacceptable and really unlistenable in my system. While they were extended I found them to have a piercing nature that was extremely fatiguing and the soundstage was not very coherent in comparison to either the Ayre or the musical fidelity that I had.
The CX-7e version is a setup from the CX-7, which I found to be somewhat rolled off in the HF but even so worlds better then the 840c. The CX-7e does not suffer that issue and is truly a great cdp...
Chris Kline
Tel Wire