Audiotent Tip 327. Bitcrusher after low-pass filter.
Low-pass filters are great for getting rid of any unnecessary high frequencies.
A good filter will also make your sound source warmer and thicker. However, if we remove too much of top-end, chances are, the sound might get slightly lost in the context of the mix.
Adding a bit crusher (lo-fi) effect right after the filter will generate additional high frequencies and push the sound forward.