A-JAX (에이젝스), also known as "DSP Boyz", is a 7 member idol group from Seoul, South Korea. They debuted under DSP Media, a label renowned for acts such as Kara and SS501, in 2012 with the digital single "Neobakke Mollaseo" (너밖에 몰라서). The members include Hyeongkon, Seungjin, Jaehyung, Yunyoung, Hyojun, Sungmin, and Seungyeob.
The debut of the group was announced on April 1, 2012 with a video teaser of their show, "Making the Star". During that time, they were temporarily called "DSP Boyz", and more teasers of the show were revealed on DSP Media's YouTube account. On April 13, the group signed a two-year contract as endorsement models for the casual sports brand, "Spris", and it was also revealed that the members of the group would be revealed one by one starting April 17 on DSP Media's YouTube account.
On April 17, the first member of the group, Jaehyung, was revealed. On April 18, the second member, Yunyoung, was revealed. On April 19, the third member, Hyojun, was revealed. On April 20, the fourth member, Sungmin, was revealed. On April 21, the fifth member, Seungyup, was revealed. On April 22, the sixth member, Hyeongkon, was revealed. At this same day, more details about both members (Seungyup and Hyeongkon) were also revealed. On April 23, the seventh and final member, Seungjin, was revealed.
After announcing all members of the group, on April 24, DSP Media announced the group's official name as "A-Jax". At this day, DSP also explained the meaning of the group's name: "A-Jax is in reference to the mythological Greek hero that helped bring victory to the Greeks during the Trojan War." On May 7, a mysterious video featuring Kara's member Goo Hara was revealed on DSP Media's YouTube account with a male voice on the background. The video created a confusion because it was not revealed if the video was a teaser for an upcoming Korean comeback of Kara, or a teaser for an upcoming solo event of Hara, or something related to A-Jax. On May 10, another video of Hara was released, revealing that the teaser was related to A-Jax. In the teaser, a song of the group (at this time the name was not revealed) was playing at the background. On May 15, DSP Media released the song and music video of the song played on the teaser, called "Never Let Go". On the music video only appears Hara. Later it was stated that the song was only a prologue song.
On May 21, it was revealed that A-Jax was set to be the opening act in Kara's last two shows of their first tour, Karasia, in Saitama, Japan. The members stated "It's an honor to be able to stand on such a big stage before our debut. It'll be a learning experience for us. As it is a great opportunity, we're going to work to show as much of our charm as possible."
On May 1, it was revealed that the group will be debuting in South Korea and Japan simultaneously in 2012. It was also revealed by DSP that "A-Jax will be the first Korean idol group to debut within Korea and Japan simultaneously, and will follow in the footsteps of the group SS501. A-Jax has signed under the equivalent conditions that other Korean male idol groups, who have already established their popularity, have been given, making it an unprecedented event. Thus, they are receiving much attention from Japanese music industry insiders." For their Japanese releases, they signed with the label Universal Sigma, where their labelmates Kara and Rainbow are currently signed.
In May 28, DSP Media released, on A-Jax's YouTube account, a teaser of the music video for their official debut song "One 4 U". It was later stated that the music video have cost $42,500 USD only with CG effects. The music video and full single of "One 4 U" were released on June 1. The group made its official debut on TV music shows on MBC's Show! Music Core in June 2, with the songs "Never Let Go" (used as opening) and "One 4 U". On June 4, it was stated that the group will perform on Japan's a-nation, along with the artists/groups AAA, Aaron, Breathe, Da Pump, Deep, Daichi Miura, Shu-I, U-KISS and 4ever. The event will be held in Yoyogi on August 9.
In June 19, Universal Sigma announced that "One 4 U" was re-recorded in Japanese and will be released as their debut single in Japan. The single will be released in August 8, 2012. It was also announced that the group will make a Handshake event commemorating the release of the single. It will be held in Tokyo on August 8, Osaka on August 10, Nagoya on August 11 and in Fukuoka on August 12.
In July 7, DSP Media started an event called "Wing Car Project", to the group meet their fans outside Seoul. In that same statement, it was also announced that the group will be releasing a new digital single in July. One day later, it was revealed a photo of the truck's back, revealing the name of the new single, titled "Hot Game". The single was officially released in July 11, 2012 as "One 4 U" follow-up song. In July 17, A-Jax's fan-cafe was updated with the group's fan name, to be titled "A-Light". In August 9, Universal Sigma announced that "Hot Game" was re-recorded in Japanese and will be released as the group's second Japanese single, to be released in October 31, 2012.
The group released their debut mini album titled 2MYX in November 15. The EP includes three new songs and the songs already released in South Korea, "One 4 U", "Never Let Go" and "Hot Game
They win first award Arirang's Super Rookie Idol 2012 - ".