SANTA CLARA -- The 49ers move inside Levi’s Stadium on Friday for a practice session that will serve as their first dress rehearsal for the regular season.
Coach Kyle Shanahan plans to use the day to test the tablets, headsets and the game-day operations, in general.
He also hopes to get some clarity from the NFL on the guidelines for the decibel levels and allowable pumped-in crowd noise that can be used for games this season.
“Right now, I'm hearing you’ve got to press play on the noise at the beginning of the game and you can't turn it off until the end of the game,” Shanahan said.