For more than two decades, PT Ragam Citra Harmoni has built speakers not merely as products,
but as a medium for delivering quality sound to those who listen.
Discover the philosophy behind our sound.
RCH The Art of Music and Sound System is an industry specializing in the production of amplifiers, enclosures, and a wide range of audio and sound system technologies. Founded in 2000 by Richard Santoso Widjojo, a musician with a deep passion for electronics, RCH was built on prayer, dedication, perseverance, and a clear vision. After more than two decades in the amplifier and sound system industry, RCH continues to grow with the same spirit that marked its beginning. Laser 20, the very first RCH product designed for electric guitar, was developed in between the founder’s responsibilities as a project manager at a foreign company. That project became the milestone that marked the birth of RCH. Explore our journey and discover the art behind our sound.
Built over eight months, the product was embraced by the market. Confidence in RCH emerged as listeners experienced the quality and performance of an amplifier crafted by Indonesian expertise.
Today, RCH offers a wide range of series to stand alongside the Laser 20. The Laser Series, designed for electric guitar amplification, includes the Laser 20, Laser 77n, Laser 700, Laser 2000, Laser 3000, as well as a new model currently under development. The Excellent Series, created for keyboard instruments, consists of the Excellent 77n and Excellent 700. For bass guitar amplification, RCH presents the BassChord Series, which includes the BassChord 77n, BassChord 700, and BassChord 2000.
Strict and continuous quality control is fundamental to maintaining the performance and reliability of RCH products. With ISO certification, the quality of RCH products is now recognized internationally.
Every phase in the journey of PT Ragam Citra Harmoni is part of a continuous pursuit to better understand sound. Experience, challenges, and achievements have shaped our direction and continue to drive our growth today.
