I made no reference to "specs".

Instead I want from Meridian for a start confirmation of what is actually upgraded in the 808.3 and the 861 v6 and therefore where and in what use environments audible improvement will be apparent. For example, initially with the release of details about the 808.3 there was no reference to an improved filter/apodidising but subsequently there was, but not directly from Meridian.

I repeat that such basic issues should be made clear by Meridian. Then it may or may not be relevant to be disappointed or pleased about the trade-in or new purchase price. Also there is no need to audition to consider buying if what you expected in the upgrade is not present or does not apply to your AV environment.