I can't answer about the electronics but I was wondering if speaker placement / room acoustics could be hurting your soundstage depth. I found that pulling the speakers further from the rear wall really increases depth. Cardas recommends the distance of the speakers from the rear wall to be: (Length of rear wall) x 0.447
My rear wall is about 14 feet wide so my speakers are over 6 feet from the rear wall. If I start pushing them back towards the rear wall, the soundstage depth starts to diminish.
http://www.cardas.com/insights/index.html
My rear wall is about 14 feet wide so my speakers are over 6 feet from the rear wall. If I start pushing them back towards the rear wall, the soundstage depth starts to diminish.
http://www.cardas.com/insights/index.html