Gas burner

A gas burner comprising:

• a first burner unit and a second burner unit, wherein
• the first burner unit and the second burner unit are configured to suck air from above a base plate forming the top side of a cabinet of a gas appliance, wherein
• the first burner unit is a low power burner unit and the second burner unit is a high power burner unit, wherein each of the first burner unit and the second burner unit comprises a gas inlet, an injector, a venturi pipe, and several gas outlets, the gas burner further comprising
• a first flame crown for the first burner unit, a second flame crown for the second burner unit, and an upper cap, wherein
• the first flame crown, the second flame crown, and the upper cap are coaxially arranged one above the other, wherein the low power burner unit is configured to provide a laminar flame through the gas outlets, wherein the low power burner unit comprises a circumferentially extending duct having a U-shaped cross-section configured to provide a velocity drop of an air/gas mixture, wherein the velocity drop, at least in part, provides the laminar flame, and wherein the U-shaped cross-section is formed by a circumferentially extending protrusion formed on the second flame crown that extends at least partially in a recess formed in the first flame crown.