I have a Lyngdorf 2170 (modded up a bit).
Over the last few years I’ve done many of the usual things aimed at optimizing SQ in every parameter most audiophiles pursue. Depth of soundstage remained elusive. I had some depth, but nothing I would consider particularly noteworthy, much less bragging rights.
Then, about 3 months ago, I put some upholstered ottomans (the size of small-to-medium-sized subs) in the corners behind the speakers and on top of them I placed oak plywood boards 54” H by 16.5” wide that bridge the corners of the room. And I moved the speakers further into the room by about an additional 10”. Tweeters are now about 45” from the front wall. The only add’l thing I’ve done since is add inexpensive spring pods under the speakers. They been there for about a month and improved SQ in many ways, but I’ve not removed them to make sure—yet. I’ve not taken add’l measures to see if I can improve depth even more (treatment on the front wall, perhaps?). But for me, the depth is now unreal. Not incrementally better. An entirely different league. The depth is now perhaps THE standout aspect of my rig’s performance.
Please know, the ottomans, the boards and moving the speakers further into the room improved MANY things, not just depth of soundstage.
I’ve not experienced one amp having depth and another not—in the same set up. Kind of a tough one for ya, seems to me.
Good luck.
