| Year | Quartet Name / Chapter(s) | Tenor | Lead | Baritone | Bass |
|---|---|---|---|---|---|
| 2018 | fourtified Temecula |
Brett Miser | Eric Tomlinson | Tom Teunissen | Rodger Varner |
| 2016 | Nothing Rhymes With Orange | Timothy Coleman | Devin Ricklef | Adam Rooney | Alan Rodriguez |
| 2012 | Quantum Mass Temecula |
Timothy Gedney | Mark Lewis | Chris Freiling | Michael Parish |
| 2010 | Fourhoarsemen | ||||
| 2009 | The Vagrants Santa Fe Springs, Westminster |
Joey Buss | Jonny Tillery | Colin Plain | David Meye |
| 2008 | Sin City Four Westminster |
Carson Knuth | David Meye | Nick Pizzo | Spencer Mayer |
| 2007 | Cool Whip Westminster |
Lane Aiken | David Rakia | David Meye | Marshall Voit |
| 2006 | Roundhouse | Alex Stephens | Adrian Arteaga | Jovani McCleary | Eric Orr |
| 2005 | Vocal Rangers | ||||
| 2004 | MedioChords | ||||
| 2003 | 4H Club Westminster, Santa Fe Springs |
Robert Gonzales | Russ Squires | Justin Miller | Jason Halliday |
| 2001 | Prestige Conejo Valley |
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| 1999 | Mardi Gras Fullerton |
Edwin Fajardo | Brian Young | Erik Jarvi | Shreyas Amin |
| 1998 | Alliance Phoenix |
Ken Distel | Matt Steinkamp | Dusty Schleier | Mark Davidson |