Mahler symphonies - there are always such movements - in the early days of stereo a common rallying cry was "Mahler was made for hi-fi".
Verdi Requiem - the Dies Irae.
The last movement of Beethoven's 9th. Berlioz Symphonie Fantastique.
If I might change the mood, the wonder of "classical" music is that every feeling and emotion can be found. For me the single most profound 15 minutes in music is the Molto Adagio - Heiliger dankgesang of Beethoven's op. 132 quartet in A minor. Every emotion is explored in this movement, melancholy, joy, hope, despair, thankfulness and anger. The Alban Berg recording on Qobuz is outstanding, do listen when feeling reflective!
The greatest music can blow you away even when quiet.

