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We’ve provided concert sound for some of the biggest names in entertainment. The clients we’ve served are listed below, along with a link to their website or bio.

Concerts & Speakers

Al Green | Al Jarreau | Al Stewart | Alan Parsons Project | Alicia Keys | Altan | Aeros | Akon | Alejandra Guzman | Alice In Chains | Alison Kraus & Union Station | Angie Stone | Ani DiFranco | Anjelah Johnson | Another Planet Entertainment | Anthony Hamilton | Ashanti | B.B. King | B.o.B. | Baaba Mal | Baby Bash | Bad City | Bad Company | Band of Horses | Banda El Limon | Beach Boys | Bebel Gilberto | Beck | Bell Biv DeVoe | Bela Fleck & the Flecktones | Ben Harper | Berlin | Beyonce | Big and Rich | Bill Engvall Bill Graham Presents | Black Crowes | Black Eyed Peas | Blackstreet | The Blanks | Blink 182 | Blood, Sweat & Tears | Blondie | Blue Oyster Cult | Blues Traveler | Bobby Womack | Bo Burnham | Bond | Boney James | Boyz II Men | Boz Scaggs | Braxton Brothers | Breathe Carolina | Bret Michaels | Brian McKnight | Brian Regan | Brian Setzer Orchestra | Britney Spears | Brothers Johnson | Bruno Mars |Buddy Guy | Cake | Carl Thomas | Cat Power | Cesaria Evora | Charles Brown | Charlie Daniels | Chayanne | Cheap Trick | Chelsea Handler | Cherry Poppin’ Daddies | Chicago | Chris Botti | Chris Cornell | Chris Isaak | Chris Tucker | Christina Aguilera | Chubby Checker | Chuck Berry | Ciara | Cirque du Thunder | Clay Walker | Coal Chamber | Cobra Starship | Cody Simpson | Colbie Caillat | Collin Raye  |   Commodores  |  Common | ConFunkShun | Cracker | Crash Test Dummies | Creed | Creedence Clearwater Revisited | Cypress Hill | Daniel Tosh | Darius Rucker | Dave Chappelle | Davey Jones | David Garibaldi Deftones | Delfonics | Dennis DeYoung | Dennis Miller | Derek Trucks Band | Diana Krall Diana Ross | Dick Cheney |

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Dishwalla | Disturbed | Dogstar | Doobie Brothers | Dr. John | Dr. Laura | Drake | Dramatics | E-40 | Earth, Wind & Fire | Eddie Money Edgar Winter | Elton John Elvis Costello | En Vogue | Enrique Iglesias | Eric Benet | Eric Johnson | Erykah Badu | Exotic Erotic Halloween Ball | The Fabulous Thunderbirds | Fatboy Slim | Fei Yu Chung World Tour | Floetry | Flogging Molly | Foreigner | Frankie Valle | Fred Hammond | Gabriel Iglesias | Gallagher | Gavin DeGraw | George Benson | George Carlin | George Clinton | George Duke | George Thorogood | George Lopez | Gerald Albright | Gladys Knight | Gloria Trevi’s “Trevolution” Tour 2005 | Godsmack | Go Go’s | Gomez | Governor Arnold Schwarzenegger | Greg Allman Band | Guess Who | Guy | Gwen Stefani | Gym Class Heroes | Hall & Oates | Hammer | Hanson | Heatwave | Heart | Herman’s Hermits | Hoobastank | Hootie & the Blowfish | Howard Jones | Huey Lewis & the News | Imagine Dragons | India.Arie | INXS | Isaac Hayes | Interpol | Isley Brothers | Itzhak Perlman | J. Cole | Jackie Greene | Jamie Cullum | Jamie Foxx | James Brown | Janet Jackson | Javier Colon | Jay Chou | Jay Leno | Jay Z | Jazmine Sullivan | Jazz Crusaders | Jeff Dunham | Jennifer Lopez | Jerry Lee Lewis | Jerry Seinfeld | Jesse McCartney | Jessica Simpson | Jim Brickman | Joan Jett & the Blackhearts | Joe Cocker | Joel McHale Joey Yung | John Hiatt | John Fogerty |

Read what others have to say about our work
4X in the Press

“Sound: Fantastic.  …from the very first notes, I knew there was NO need to worry.  Journey rocked it and the sound was exactly as it should be:  loud, clear & thunderous! 
– Yelp Review about Journey at Harvey’s Lake Tahoe with 4X Sound

John Handy | John Lee Hooker | John Legend | John Michael Montgomery | Johnny Bokat | JoJo | Jon Bon Jovi | Jonny Lang | Kansas | Justin Bieber | KC & the Sunshine Band | Kathy Griffin | Keiko Matsui | Kelly Clarkson | Kenny “Babyface” Edmonds | Kenny Wayne Shepherd | Kenny Rogers | Kevin Hart | Kevin James | Keyshia Cole | Kid Rock | KISS | KISSFM | Kool & the Gang | Korn | Lady Antebellum | Larry Gatlin | Larry Hernandez | Lauryn Hill | Lenny Kravitz | Lenny Williams | Lewis Black | Lil’ Kim | Limp Bizkit | Lindsay Lohan | Linkin Park | Lionel Richie | Little Big Town | Little Richard | Live Nation | Lou Rawls | Lucy Pearl | Lyfe Jennings | Lynyrd Skynyrd | Maceo Parker | Macy Gray | Magic Slim & the Teardrops | Mandy Moore | Manhattan Transfer | Manzarek-Krieger | Maria Shriver | Maroon 5 | Marshall Tucker Band | Martin Lawrence | Martin Nievera | Mavericks | Maze & Frankie Beverly | Mazzy Star | Medeski, Martin & Wood | Megadeth | Melissa Etheridge | Menopause the Musical | Michael Franti & Spearhead | Michael McDonald | Mickey Hart Band | | Mike Daughty | Miracles | Miranda Lambert | Missy Elliot | Montgomery Gentry | Morris Day | Mos Def | Mose Allison | Mountain Aire Festival | Nelly |

Browse our list of inventory and
Request a Custom Quote for your Event

Nelly Furtado | Neutral Milk Hotel | Ne-Yo | Night Ranger | O’Jays | Ohio Players | 1996 Olympic Torch Lighting | Omara Portuondo | Ozomatli | P.O.D. | Papa Roach | Paramore | Pat Benatar | Patti Austin | Patrizio Buanne | Patti LaBelle | Paul Brown | Paul Rodgers | Paul Simon | Paul Oakenfold | Peabo Bryson | Peter Cetera | Peter Frampton | Phil Lesh | Pheonix | Presidents George W. Bush, Bill Clinton, George Bush Sr., Ronald Reagan | Prince | Pretenders | Pure Prairie League | R. Kelly | R.E.O. Speedwagon | Ramon Ayala | Randy Sparks Rascal Flatts | Ray Charles | Ray Romano | Reno Philharmonic | Reverend Horton Heat | Rick Braun | Rick Springfield | Ricky Berger | Rihanna | The Rippingtons | Robert Cray Band | Ron White | Russell Peters | Sacramento Symphony | Salt-N-Pepa | Sammy Hagar | Santana | Santigold | Sawyer Brown | Selena Gomez | SFX Entertainment | Sheena Easton | Sheila E. | Sheryl Crow |Simple Plan | Slaughter | Slipknot | Smashmouth | Smashing Pumpkins | Smokey Robinson | Smothers Brothers Snoop Dogg | Social Distortion | SOS Band | Spirit of Asia | Spyro Gyra | Staind | Starship | Steppenwolf | Steve Miller Band | Steven Wright | Stone Temple Pilots | Sting | Stylistics | Superior Consulting | Switchfoot | Styx | T-Pain | Tainted Love | Taio Cruz | Tanya Tucker | Terry Fator | 

Check out XXXX AUDIO SYSTEMS featured in
FOH Magazine November 2008

The Avett BrothersThe Band Perry | The Bellamy Brothers | The Black Keys | The Fray | The Temptations | The Tubes | Third Eye Blind | Thunder Valley Resort Amphitheatre | Tiesto | Timothy B. Schmit | Todd Rundgren | Toni Tennille | Tonic | Tony BennettTony Toni Tone | Tower of Power | Trace Adkins | Train | Trey Anastasio | Troy Olsen |United We Funk Allstars | Van Morrison | Violent Femmes | The Wallflowers | Wango Tango | Warped Tour 5 | Wayne BradyWeird Al Yankovic | Wiz Khalifa | The Whispers | The Wiggles | Will Smith | Willie Nelson | Wyclef Jean | Wynonna | Yo La Tengo |ZZ Top Zappa Plays Zappa |
Zappacosta
 | 3OH!3 | 30 Seconds to Mars | 98 Degrees

Corporate Events

Burger King | California State Fair & Exposition | CSUS Commencement Ceremonies | ESPN | Grand Sierra Resort | L.A. Inner City Games | L.A. Times |  Lifestyles Convention | McGeorge School of Law | Sacramento Kings | Safari Club International |  Sebastian International | Tesla | Tupperware Convention | Vision Awards |