HALO Vessel began after Ed Matus decided to take a break from the Miami Hardcore scene and go straight into the world of experimental electronica. Armed with a drum machine, an old synthesizer and an army of noisy guitar pedals he began to record a series of 4 track recordings which caught the attention of Audio Electric.
In 1998, Audio Electric released his first full length effort. The self titled full length (also known as "Post Miami Vice Electronics" drew heavily from the influences of Herbie Hancock, Kraftwerk, and Jan Hammer, but still showed off a noisy and raw sensibility which gave Matus a reputation for making sonically organic electronic music.
Though certain trademarks would remain evident, his overall sound and direction evolved into what became his second release for Audio Electric, "Honest Men" E.P. Released in 2002, "Honest Men" was a quantum leap in terms of sound and style. In the first HALO Vessel full length, the overall vision was of smooth rhythms and futuristic synths. In "Honest Men", rhythms became aggressive, destructive, and pregnant with heavy bass. The synths were no longer smooth and futuristic. In "Honest Men", they became jagged, and at times, even howled like gigantic rusting machinery. Aesthetically speaking, Matus was displaying a different future than the one he showed in his first release. After the live experience of HALO Vessel, Matus deliberately set out to make a recording which almost sounded live as opposed to the very dry and sterile production heard in many IDM recordings of the time.