Bruno Mars

In this photo, Mars can be seen playing Fender Stratocaster in surf green.

In this photo, one can see Mars with a Gretsch Anniversary model.

In this photo, one can see Bruno Mars with a sunburst Guild GAD-50.

In this gif, one can see Bruno Mars playing a Fender Coronado II.

In this photo, one can see Bruno Mars with Guild GAD F-20.

In this YouTube video. You can see Bruno Mars is performing "Grenade" with the Taylor 714ce Rosewood/Spruce Grand Auditorium Acoustic-Electric Guitar.

He use the Takamine GD51-BSB Dreadnought Acoustic Guitar, Sunburst almost through the whole video.

As seen in the 2017's Grammy Awards for a tribute to Prince.

As seen in Ernie Ball's Instagram account.

He uses few custom made Albert Lee models by Music Man.

In this Instagram photo posted by Bruno Mars, some of his gear can be seen, including his Fender Custom Vibrolux Reverb-Amp Combo (posted Jan 2015).

In this photo, which shows Bruno Mars' pedalboard, the Dunlop 535Q Multi-Wah pedal is visible.

Bruno Mars, channeling James Brown with his energetic, throwback performance of “Runaway”, had the singer using an SKM 2000-XP with MMD 945-1 capsule. James Berry, monitor engineer for Mars shared, “Sennheiser products have great sound and reliability. We could not have done it without Sennheiser. I’m always grateful for their gear and support in making it happen under the stress of a live event like the Grammys.”

Bruno Mars, channeling James Brown with his energetic, throwback performance of “Runaway”, had the singer using an SKM 2000-XP with MMD 945-1 capsule. James Berry, monitor engineer for Mars shared, “Sennheiser products have great sound and reliability. We could not have done it without Sennheiser. I’m always grateful for their gear and support in making it happen under the stress of a live event like the Grammys.”

At 3:42 Bruno Mars is seen using this mic in the video for the song Gorilla.

Here you can see Bruno Mars perform at the 2016 Grammy Awards. Mars’s front-of-house mixer Chris Rabold and monitor engineer Ramon Morales have been ecstatic with the sound quality and reliability of the Digital 9000. Currently, the pair is in rehearsals for Bruno Mars’ upcoming 24K Magic Tour, where the Digital 9000 will serve as the tour’s primary wireless system, making the decision to use it in a broadcast environment for the first time an easy one. “In a situation like the Grammy Awards, you have a very limited amount of time to dial in your settings,” Rabold said. “What’s great about Sennheiser and the Digital 9000 is that your sound is essentially there as soon as you turn the system on.”

Microphone can be seen in the photo.

shure sm57 vocal mic in "Treasure" video.

He usually used Skm 5200 II black with MD 5235 Capsule in Nickel then same Microphone for his background vocal in all black

As seen in Ernie Ball's Instagram account.

Bruno Mars posts a photo of the studio gear setup he's using in his hotel room. The MIDI controller keyboard he's using is the M-Audio Axiom AIR Mini 32. He says, "Day off! Damn near midnight and I'm in my hotel room making monster beats yo! #WhenImOffImOnOne #ThinkAboutIt #Blessings #LicksLips"

Practice , practice and practice

In this photo, Mars is holding Fender Nohea ukulele.

At the beginning of this video, Bruno Mars can be seen playing a Korg SV-1 Stage Piano.

Bruno can be seen using this Moog at :49 of the video linked above. He shows to reporter Lara Logan as regards as his brand new single and title-track 24K Magic. He uses it for the bassline of the song, in fact.

In this video, Bruno is seen playing his Roland Juno-106 at about 3:30 for the fast brass synth used in his single 24K Magic. A Roland Juno-60 is also noticeable by its white momentary/toggle button in the left side, just in front of the Roland Juno-106.

Mentioned on the official product page.

The M4000D digital Mellotron has been very well received by the keyboard community. It has been used onstage and in the studio by many well-known artists, musicians and producers, to name a few: FooFighters, Red Hot Chili Peppers, Smashing Pumpkins, Wilco, Incubus, Queens of the Stone Age, Eels, Jackson Browne, Bruno Mars, Band of Horses, Fleet Foxes, Sean Lennon, Brendan Benson, Air, Kooks, Train, Elbow, Michael Beinhorn, Bob Rock, Raphael Saadiq, Noel Gallagher, Gotye��