bx_solo is a compact and practical tool designed to introduce users to the mid/side (M/S) audio technique, suitable for recording, mixing, and mastering tasks. It provides clear access to individual audio components, including the left (L), right (R), mid (M), and side (S) signals, all phase-corrected when necessary. This functionality allows for precise monitoring and manipulation of stereo mixes, which can be challenging in many digital audio workstations when isolating the side signal.

A key feature of bx_solo is its stepped stereo width control, enabling users to adjust the stereo image for various audio sources such as subgroups, effects returns, keyboards, and samplers. This control offers an engaging way to enhance elements like rock guitar subgroups by increasing their presence in the stereo field. However, heavy use of the stereo width control may introduce phase issues, which can be addressed with complementary tools designed to maintain mono compatibility, particularly in the bass frequencies.

The plugin is fully automatable and includes intuitive controls that streamline workflow, such as mouse wheel adjustments over knobs and direct numerical input for precise parameter settings. These features make bx_solo an accessible and effective solution for audio professionals seeking to explore and refine their use of mid/side processing in their projects.