No, not "huge." Not even remotely as big a part as the speakers.
You are right, the speakers characteristcs will weigh more than the electronics design of the dac or the amp and even of the 2 most of the times if not always...
But the room will weigh on par with the speakers design half the time, and for the other half will weigh even more...
:)
Theater design is more important than the speakers in the theater, if there is some, no need in a good acoustical theater of powerful amplification or electronics to compensate the room....No need even less for some particularly more refine amplifier design.... :)
Polykleitos the Younger is much older than Edison; acoustic science precede faithful modern reproduction of sound (hi-Fi)...
This is the reason why a good audio engineer is also an audiophile, and why most audiophiles dont need the urge to becomes audio engineers.... :)
« Why dont you own a stereo system? I prefer Greek theater»- Groucho Marx