Following is a quote including the bit from the question, plus some later lines. [Source: a gungaleonlinevmmorpg blog]
“AGI(Agility) being all powerful is just an illusion!”
The man’s high tones spread throughout the spacious bar.
“It is true that AGI is an important attribute as it determines firing speed and avoidance rate. These two factors could make you very strong, until now that is.” [...] That speech came from a player in the square holo-panel floating in the center of the dim shop. It was the net broadcast, [...] You could watch it in the real world from a television or a computer, but it was also broadcasted in many VRMMO worlds’ inns and bars simultaneously, [...]
From the extended context, it's clear that bar means a saloon or pub where alcohol is served. There is a man speaking via a holo-panel, turned up loudly enough to be heard throughout a certain bar. His voice is high-pitched, but I have the impression (from use of the word tones) it may be mellow enough for easy listening.