The Sprint version of the HTC One M8 allegedly contains these speakers, according to the latest technology news.
HTC's undertaking with Beats finished a while back, yet is the cell phone producer courting an alternate mainstream sound organization? Harman/kardon makes anything from earphones to auto sound and it appears that Sprint's HTC One (M8) has Boomsound speakers produced by simply that organization.
It appears that units sold by Sprint as of recently have the speakers in them, yet HTC hasn't settled the negotiations totally, which is the reason the organization isn't gloating about the exceptional speakers simply yet.xda Developers client Rydah805 posted a screenshot emphasizing a Harman/kardon alternative in the settings menu.
HTC users need to hold up until HTC makes it happen to see whether it has any arrangements to utilize H/k speakers on different cell phones, particularly other One (M8) versions.
Source: XDA Developers