The phrase "an established voice" is correct and usable in written English.
It can be used to describe someone who is widely recognized and respected for their opinions or ideas. Example: As a veteran journalist, she had become an established voice in the media industry, known for her insightful commentary and unbiased reporting.
By now, Galeano had an established voice as a writer, and he soon settled down to write a series of books that embellished the formula that had proved so successful with Open Veins, combining contemporary observations with historical anecdote.
Your crisis planning should be built on the same communications foundation as the rest of your brand, with an established voice and tone, general messaging approach and client engagement process.
Lisa Egan Disability Rights Campaigner (76) Egan is an established voice challenging the way disabled people are viewed by society, chronicling the cuts that disproportionately affect disabled people, and discussing society's treatment of mental health.
Links with longevity suggests that your site is an established voice for whatever topic it covers.
A singer and an established voice-over artist, she envisioned her product years before "the face of AIDS" was a reality.
A few established voice actors were brought in to give a polished touch to the voices in the game.
Evert Bopp is a wireless expert putting together "a team of wireless engineers to actually go out there and build a number of wireless mesh networks in an attempt to re-establish voice & data comms for the relief agencies".
Quite understandable really as the Guardian already has an established tone of voice so it makes sense that any voices we found from within the Guardian would take on and embody the values of the Guardian.
They also help to establish voices.
The network was clearly taking a risk, eschewing a British voice or an established American soccer announcer like J. P. Dellacamera in the hope that Johnson would develop quickly and become its signature voice on soccer.
This song (rougher, more rural, more Southern, more like the simple blues, but no less "arranged" than the songs she had recorded for Columbia) established a Voice for her and a presence in the commercial marketplace.
