Sorry I've been away from this site and my original post. I thank everyone for their comments and suggestions. I did try a Pass INT 25 integrated with my Harbeth setup (everything remained the same except for inserting the INT 25. It did some amazing things in the midrange, where I heard instrumental passages in a symphony come to life and stand out very clearly. There may have been more space around the instruments.
The soundstage was very wide. But I felt that the bass wasn't as tight and forceful (as with the Rega) and that they highs weren't as transparent/extended (I don't mean bright). So I sold it and went back to using the Rega. In the interim I bought a Audience Forte 3 power cord and it made a substantial improvement to the sound. It's a 10 gauge cable and it seems to deliver the current the Harbeth's demand at times. It's the best $150 I've spent in audio. Highly recommended. I'm still looking to upgrade my amp. Looking at the Luxman integrateds that have been mentioned in this thread; the Gato 150. I'm inclined to stay away from Hegel. BTW I'm using Transparent Plus speaker and interconnects. Recently upgraded my streamer from Bluesound Node 21 to the new Node. A significant improvement --- highs are more transparent along with a bigger soundstage. I would love to hear the D'agostino progression integrated with the 30.2 XDs. I have a dealer nearby whom I might be able to arrange a borrow (He doesn't carry Harbeth). It's an expensive amp and I'd really be pushing the budget. Thanks again to all who replied. I will post updates as I make progress.
