I've experienced the same too. As an original Frey Ic and Sc owner I have the demo case and found something else very interesting. My system is an Octave V70SE tube integrated driving Dynaudio C1 Signature speakers with a Meridian G08 source. I also have a Rel B3 sub.
That being said I started listening to the series 2 without the sub. Much more liquid sounding with more low end without losing any of the speed - detail and highs. But when I connect my Rel back up I have to cross it over even lower to get a seamless integration. In my opinion the sub makes up for a lot (but not all) of what the series 2 does better than the originals.
In my opinion without the sub the series 2 is a major upgrade and only a minor one with the sub.
That being said I started listening to the series 2 without the sub. Much more liquid sounding with more low end without losing any of the speed - detail and highs. But when I connect my Rel back up I have to cross it over even lower to get a seamless integration. In my opinion the sub makes up for a lot (but not all) of what the series 2 does better than the originals.
In my opinion without the sub the series 2 is a major upgrade and only a minor one with the sub.