What is the best 2 channel listening chair?

Hmm...

I love my orange "lawn chair" with the "milk crate" for my flip-flop covered feet...

(It’s a minimalist thing)!

But really, - A low-backed, suede leather covered "La-Z-Boy" chair.

(Very low wave-diffraction coefficient, plus high particle scatter-absorption).

And damned comfy!

Vintage Ekornes 'Pegasus' chair - it also came in a loveseat.  Back reclines.  Almost as good as the Le Corbusier in the Maxell ad.  Chair and Current Chair view....

Ekorness Stressless Recliner.... need to comfortable for four hours and sleep anytime

May I suggest the LeCorbusier Chaise Lounge LC4.  For music listening set it the most upright position.