The RG1550M is an RG seriesPrestige solid body electric guitar model introduced by Ibanez in 2009. It is the successor of the 2003–2004 RG1550 model and is the first model in five years that is a direct descendant of the RG550.
The RG1550M features a basswood body, pickguard-mounted Ibanez pickups, the Edge Pro tremolo bridge and a maple fingerboard. It was introduced at the 2009 Winter NAMM and added to the line-up in Japan later that year.
In 2010, the RG1550M was replaced by the RG1550MZ featuring the Edge Zero tremolo. The RG1550M was also available left-handed as the RG1550ML. The PBL and PPN finishes were also used for the limited edition RG1520A.
Production of the RG1550M was officially ended in 2009 in favor of the new RG1550MZ introduced in 2010, featuring the Edge Zero tremolo. In the USA however, both the Edge Pro-equipped models and the new models are listed as the RG1550M. As of 2011, the RG1550MZ is still listed as the RG1550M on the US website and in the US catalogs.