The Mongoose lets you solidify your bass by collapsing your bass frequencies into mono. Out of the box, you'll get tighter, more focused bass. The clear, simple layout makes it couldn't be easier to dial in the exact sound you need.
Here's the deal: having a good wide stereo spread is great. This helps your mix sound more spacious and less cluttered. Instruments seem to struggle less and everything sounds clearer. But our brain reacts differently to a wide spread of stereo at high frequencies than it does at low frequencies. Large stereo spread at high frequencies = good. Large stereo spread at low frequencies = not so good.
The problem exists because of the way our ears and brains are accustomed to hearing sounds naturally. At low frequencies, we can't really detect where a sound is coming from. It is the high frequencies that allow us to know where a sound is coming from.
This can lead to some major problems when mixing on monitors. You may have some low frequencies that are coming out of just one speaker and you won't be able to tell. Put on headphones and it's immediately obvious there's a problem. You may instinctively feel your head spinning as your brain tries to figure out why the bass sounds so unnatural.
This is where Mongoose comes in. It takes all the broad low frequencies and puts them right in the middle where they belong. The result is bass that translates better to headphones and 2.1 systems, and just provides a more consistent and natural sound overall.
This plugin really couldn't be easier to use than it is. Just set the crossover frequency and everything below it will sum in mono. You can also adjust the width of the stereo image by adjusting the width knobs. This is the type of plugin that should automatically be on every bus master.
