Later half of 2012, Daycha "Jeng" Konalo became the new leading vocalist, replacing Ekkarat in EP Dan Neramit, their seventh album released in April 2013.

Big Ass won numerous awards for their work but attracted a rather limited audience during their first three albums.

Their fourth album Seven (signifying seven years in the music scene) was very successful in terms of awards and popularity.

Their fifth full album was Begins with hit songs such as "Kha Noi Somkhuan Tai" and "Prom Li-Kit".

In 2008, an original soundtrack for Thai movie Pid Term Yai Hua Jai Wawun (ปิดเทอมใหญ่ หัวใจว้าวุ่น, also known as Hormones) featured Big Ass.

[6] In 2011, the band's guitarist-backing vocalist Poonsak Jaturaboon sang in the original soundtrack Tum Yu Nai Jai (ทุ้มอยู่ในใจ) for the film SuckSeed.

Daycha Konarlo appeared as the band's new leading vocalist on their single "Dan Neramit" (แดนเนรมิต), which was released in August 2012.

Ekarat released a solo Khon Tai Thi Hai Jai (คนตายที่หายใจ) with Rock Rider (consisting of Dak, Silly Fools, Airborne) in 2014.

While Wongcharat gave his blood sample for DNA testing in March, Fai and Justin did not give theirs until early May.