Volume Level?

When using Channels on my Nvidia Shield the volume level is considerably lower than all other apps I use...ex: Youtube, Hulu etc . For example I'll have the Hulu app open watching TV at volume 15....fairly loud, I'll switch to Channels app....volume 15 has barely any sound....will have to turn up to about 28-30 to match the Hulu app. Is there anything I can do to "adjust" the volume levels to match all my other apps?

What kind of speakers/sound system?

Does turning off Surround Sound on the Player Settings tab make any difference?

I have a TCL Roku TV.. no surround or external speakers. I already have the surround disabled in the settings.