| #? | Album | Singles/promoted songs? | Release date1 |
|---|---|---|---|
| 1 | EQUALIZEHER | "To Men", "Haircut" | July 3, 1997 |
| 2 | BABY VOX II | "Ya Ya Ya", "Change" | September 15, 1998 |
| 3 | Come Come Come Baby | "Get Up", "Killer", "Missing You" | July 21, 1999 |
| 4 | Why | "Why", "Betrayal" | May 15, 2000 |
| 5 | Boyish Story | "Game Over", "Doll" | June 4, 2001 |
| 5.5 | Special Album | "By Chance", "Go" | April 23, 2002 |
| 6 | Devotion | "What Should I Do", "Wish", "I'm Still Loving You" | April 3, 2003 |
| 7 | Ride West | "Xcstasy", "Play Remix" | March 18, 2004 |
| Type | Name | Release date |
|---|---|---|
| Compilation | Net CD | January 29, 1999 |
| Compilation | Show Me Lovable Girls | March 23, 2000 |
| Compilation | 2000 Collection | October 10, 2000 |
| Compilation | 2000 Collection | January 17, 2001 |
| Live Album | The First Concert in Seoul | September 16, 2002 |
| EP | Go - 1st Mini Album in Japan | March 12, 2003 |
| Compilation | Best Album | April 15, 2007 |