Bx_solo is a nice little tool that we have designed to get you STARTED with and used to the way we approach the M/S technique - be it for recording-, mixing- or mastering purposes. The "heart" of our M/S tools are our unique SOLO BUTTONS that allow you to actually LISTEN to all components of a stereo mix / stereo signal individually:

L(left channel), R(ight channel), M(ono sum) & S(tereo difference signal) - and all this PHASE CORRECTED (when needed) and mono-ed out on BOTH SPEAKERS of your system. This is very helpful when working in M/S modes (because especially listening to only the S-signal of a stereo mix is not so easy to do with modern DAW stations) and to check your signals / mixes for errors, noises, clicks, whatever...

bx_solo also contains a STEPPED M/S STEREO WIDTH CONTROL, so you can get an impression about what you can actually do with ist. Do try it out on subgroups (makes ROCK GUITAR subgroups jump out of your speakers at about 150% !!!), FX returns, keyboards / samplers, etc.

>>> Using the STEREO WIDTH CONTROL too heavily may lead to phase problems. bx_control & bx_digital both have the MONO MAKER on board - this tool will be able to get rid off these phase problems with its UNIQUE way of mono-ing out your stereo signals / mixes ONLY IN THE BASS FREQUENCIES - MONO MAKER is the solution - unless you really over-do the settings...