The boyband teamed up with a range of songwriters and producers for their second LP Battleground, including hit-maker Dianne Warren and Phat Fabe.
On why the group decided to work with international musicians, Siva Kaneswaran told Digital Spy: "We didn't want to fix it, we just wanted to broaden our horizons really.
"We wanted to see what American producers could do with us and we also worked with some amazing Swedish writers too. Because of the mix, the album has a more international feel."
Kaneswaran also revealed that their new sound was also due to the band having more involvement during the creative process.
"With Battleground we've literally taken the reins and it's definitely the first album where all of the band had control. That's the way we wanted it," he said.
"We worked with musicians right from the start of this album and have had more of a grasp on it. The sound has totally changed."
Kaneswaran added: "There's a song on the album by me and my brother about his wife ('I Want It All') and Nathan did a cracking job with Max on 'Invincible', which I'm a big fan of.
"They also did 'Warzone', which is basically the new sound of the album. It gives you an insight of what the rest of the record is like."
The Wanted's new album Battleground is available to buy now.
> The Wanted tease fight scene in new music video for 'Warzone'
> The Wanted preview new album 'Battleground' - listen
Listen to a clip The Wanted's new single 'Warzone' below: