Equal Vector formed at Oktomber of 2002 and the members were Theo dore Pegousis (Drums), Mpampis Antonatos (Guitars), John Katsiafliakas (Bass) and Vaggelis Kakarougas (Keyboards) and they begun as an instrumental progressive band. After some time the first two songs were writen, which were concluded in the first demo-cd. In March of 2003 another member joined in. Leonidas Hatzhmihalis is the singer of Equal Vector.

Later on the rehearsals continued and Equal Vector took part in some gigs as the Rock Festival in Lesvos which took place in July of 2003. At April of 2004 they completed the recordings of the second demo-cd "Chorincle and a Presence" which concluded two songs. After the arrival of the new guitarist at September of the same year, Equal Vector prepared for the opening of Pain of Salvation's live in Athens at November of 2004.

As the new material gathered to take form in the studio, the debut album "Lyrically Spoken" recorded in 2006 and now is under the mixing process by Maarten Wijler in Holland. The release will take place in the fourth quarter of 2007.