HTC One M9's new BoomSound speakers set to shake the room

HTC's new flagship handset, the HTC One M9, is set to launch on March 1 at a press conference at MWC.

As much was confirmed after an advert from the company appeared on an advertising hoarding at a UEFA Champions League game last week, but not everything is known about the handset just yet.

HTC has been teasing us with little snippets of detail about the phone for the past couple of days and now we've seen tweets suggesting the return of the BoomSound speakers and some potential upgrades.

HTC's USA account tweeted "Rumor has it: BoomSound on the HTC [letter][number] is SO [adverb] powerful that it'll [verb] your [noun] off. [interjection], bro. #madlib"

Boom Boom Pow

Whilst the HTC Ireland page made the upgrade more obvious when sharing "Get your hands on bigger boom #ComingSoon #6days #MWC15".

The tweet was accompanied by a video of a boombox with a loud dubstep soundtrack and the announcement date at the end.

HTC is clearly teasing something big with its new BoomSound speakers suggesting it'll be getting a bit of an upgrade from what we saw on the HTC One M8.

To find out what is changing we'll have to wait until the announcement on Sunday.