Sound Channeling Case for S6 Lite

[TechnicGeek]

Hello,

I have Samsung Galaxy Tab S6 Lite and I am looking for a case that improves sound coming from device's side speakers.

I know there is Poetic TurtleSkin case but its only a shell without cover and I am looking for a shell with cover. Preferably one that puts device on standby when I close the cover as a bonus.

Anyone can recommend a case with cover that improves direction of sound coming from speakers?

Thanks.