| Year | Quartet Name / Chapter(s) | Tenor | Lead | Baritone | Bass |
|---|---|---|---|---|---|
| 2025 | Rhapsody Barbary Coast, Salt River Valley, St Croix Valley, MN, Frank Thorne |
Keith Olson | Larry Halvorson | Brent Graham | Steve McDonald |
| 2024 | Ready Willing & Mabel L.A. South Towns; South Bay, CA; Frank Thorne |
Kate Walker | Caroline McLean-Neushul | Pete Neushul | Jim Campbell |
| 2023 | Six Feet Off Bass Greater Los Angeles, Pasadena, Westminster |
Eric Emmons | Lenny Jensen | Mark Travis | Willie Daw |
| 2022 | GANG BUSTERS Greater Los Angeles & Frsnk Thorne |
James Thompson | Brad Kelso | Dan Jordan | Geoff Wilson |
| 2019 | Over The Line Visalia, California Delta, Bay Area, Frank Thorne |
Doyle Pope | Robert Lenoil | Gary Bolles | Billy Hill |
| 2018 | R.I.C.K.S. California Delta, Central California |
Dave Wallace | Steve Leipelt | Bruce Sellnow | Richard Lund |
| 2017 | Renaissance Salt River Valley, Santa Fe Springs, Frank Thorne |
John Fynmore | Fraser Brown | Gary Steinkamp | Richard Wells |
| 2016 | Spellbound Bay Area, Frank Thorne, Palo Alto-Mountain View |
Paul Engel | Steve Sammonds | Steven Kirch | James Sherman |
| 2015 | Blood, Sweat, and Years Bay Area, Santa Fe Springs, Frank Thorne |
Paul Engel | Lester Weiser | Bob Cathaway | Bill Myers |
| 2014 | High Priority Greater Phoenix |
Ray Estes | Byron Bennett | Mark House | Dan Davenport |
| 2013 | Joint Venture Tucson |
Roy Ireland | Les Walter | Wayne Lohmeier | Richard Kates |
| 2012 | DOUBLETAKE Santa Fe Springs, Bay Area, California Delta, Belleview(WA) |
Leslie Dergan | Gary Bolles | Charles Landback | Bruce Morgan |
| 2011 | Velvet Frogs Santa Fe Springs, San Fernando Valley, Fullerton, South Bay |
Leslie Dergan | David Livingston | Cecil Sams | William Wilson |
| 2010 | Silver Knights Las Vegas Metro, Palo Alto, Frank Thorne |
John Mininger | Warren Hettinga | Chuck Wines | Jimes Sherman |
| 2009 | Motley Q Bay Area |
Paul Engel | Steve Bishop | Jack Steck | David Haedtler |
| 2008 | Audacity Greater Phoenix |
John Fynmore | Byron Bennett | Fraser Brown | Greg Dodge |
| 2007 | California Crossroads La Jolla, Santa Fe Springs |
David Yarnell | Lester Weiser | Peter Hensley | Larry Thorpe |
| 2006 | Music Box Greater Phoenix |
Daniel Wilson | Jack Nelis | Bob Szabo | John Bloomquist |
| 2005 | Vintage Gold Bay Area Metro, Fresno, San Jose |
Ron Bass | Gary Bolles | Pat Henley | Jim Sherman |
| 2004 | Sands of Time Frank Thorne, South Bay, San Fernando Valley, Crescenta Valley |
Michael Hemphill | David Livingston | Charles Brooks | Robert Platzer |
| 2003 | Curtain Call Rincon Beach |
Max Frickey | Donald Kileen | Bob Cathaway | James Serdahely |
| 2002 | Time Honored Orange, San Fernando Valley, Santa Fe Springs, Santa Monica |
Stan Haymaker | David Livingston | Bob Heron | Tom Benton |
| 2001 | 4 Old Times Sake Frank Thorne, Inland Cities |
Jerry Fairchild | Jim McKee | Bruce Maxey | Ron Chriswell |
| 2000 | Mutual Fun Santa Fe Springs |
Art Taylor | Les Weiser | Lefty Parasson | Dave Briner |
| 1999 | Potluck Bay Area Metro, San Jose, Frank Thorne |
Bill Cale | Barry Mellor | Bill Borah | Jim Sherman |
| 1998 | A Touch Of Class Palomar-Pacific |
David Yarnell | Bob Debol | Peter Lensley | Dean Kirkland |
| 1998 | Energizers, The San Gabriel Valley |
John Johann | Richard Briel | James Campbell | ? |
| 1997 | Pacific Express San Luis Obispo |
Max Frickey | Babe Silva | Paul Silva | Kent Brahams |
| 1996 | Remember When The Doors Sang Phoenix Saguaro, San Jose, Placerville |
Al Mau | Don Gubbins | Galen McClain | Jim Sherman |
| 1995 | Sixty Something Placerville, Sacramento, Nevada-Placer |
Neal Sisson | Don Gubbins, Sr. | Ray Rhymer | Stan Sharpe |
| 1994 | Sentimental Favorites Placerville, Sacramento, Bay Area Metro, San Jose |
Neal Sisson | Don Gubbins, Sr. | Pat Henley | Jim Sherman |
| 1993 | Shades Of Grey Phoenix Saguaro |
Chuck Nicoloff | Dwight Ellis | Goerge Hoffman | Bill Kane |
| 1992 | Jest For Phun? Conejo Valley |
Jim Laverty | George Dallas | John Ford | Larry Krause |
| 1991 | Erin Boys Bay Area Metro, Chico, Walnut Creek |
? | ? | ? | ? |