The Monitor Audio System R, released in 1982, was a modular and innovative speaker system consisting of three key products that could be configured for different applications:

The R352 was a 2-way floor-standing speaker that served as the foundation of the System R. Known for its detailed midrange and excellent bass extension, it was highly regarded for its versatility in both stereo and multi-speaker setups.

The R252 was a smaller bookshelf speaker designed for compact spaces or as a surround speaker in a System R configuration. The R252 provided a similar tonal balance to the R352 but in a more compact form factor.

The R152 was a compact satellite speaker designed for use in modular setups, often paired with the other components for surround sound or distributed audio configurations - focused on clarity and spatial accuracy.