"can it match the natural 'beauty' inherent to the EL-34?"
I won't say that the 845 isn't a quality tube capable of making beautiful music in the right design, but to answer your question very specifically, and with the understanding that "beauty" is in the ears of the listener: When I hear someone ask for a beautiful sounding tube, the 845 doesn't spring to the forefront of my thoughts. One might call it a different beauty, somewhat akin to the difference between incandescent light and the flickering light of a fire.
I won't say that the 845 isn't a quality tube capable of making beautiful music in the right design, but to answer your question very specifically, and with the understanding that "beauty" is in the ears of the listener: When I hear someone ask for a beautiful sounding tube, the 845 doesn't spring to the forefront of my thoughts. One might call it a different beauty, somewhat akin to the difference between incandescent light and the flickering light of a fire.