No hijack, the more I know, the better.
My understanding is that the X-10D original was a relatively inexpensive way to add a tube sound to the output. By giving the rest of the system an easy load with the buffering, you could just about run any length cable (not my problem in my system).
Some said any improvement in sound was because it increased the volume by a dB, louder being better. Others said it was a great little device. This new iteration has a better set of tubes. amusicdirect and musical fidelity websites will direct you to British press on the unit.
I'm really close to buying it. For 400 bucks, it looks like an item you can throw into secondary systems if need be.
biz