Creating a Large Sound Stage

Nah, it's because the electrons are free to travel without hindrance from all that substrate.

Ah, that old trope based on zero evidence. 🙄

Tube power supply for the turntable…ya just can’t be careless hoping a SEMIconductor will oblige free passage……

@noromance 

But as mentioned diffusion is a big help. See North listening pics…. 

Pull speakers away from walls.  This is the best audible example I have ever come across that demonstrates this.  Record Day also have a system to pull speakers out call LOTS.
https://youtu.be/mjQ2Wy24wC4?si=ZtApabZ32CSJTJdx

So you want a large soundstage? Get a pair of DCM Time Windows. They measure as well 90° off-axis as direct. I have a pair in use as my main speakers. 

'Tube power supply for the turntable…ya just can’t be careless hoping a SEMIconductor will oblige free passage'……

Older op amps are not good, but the Muses02 should create a large sound stage.