# \[Hilo\] How to tune the voice volume we hear?

**URL:** <https://forum.sierrawireless.com/t/hilo-how-to-tune-the-voice-volume-we-hear/6568>\
**Category:** HL Series FAQ\
**Created:** [July 23, 2013, 6:21am UTC](https://forum.sierrawireless.com/t/hilo-how-to-tune-the-voice-volume-we-hear/6568 "2013-07-23T06:21:48Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![FAQ\_Poster](https://avatars.discourse-cdn.com/v4/letter/f/f9ae1b/32.png) [@FAQ\_Poster](https://forum.sierrawireless.com/u/FAQ_Poster)\
**Post date:** [July 23, 2013, 6:21am UTC](https://forum.sierrawireless.com/t/hilo-how-to-tune-the-voice-volume-we-hear/6568/1 "2013-07-23T06:21:48Z")

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Answer: You can set :\< AT+CLVL=1\> or \<AT+KVGR="-20"\> to make low volume of the headphone.  
Or you can set \< AT+VIP=23\> to choose PCM path. But it impacts both the speaker and headphone.