[FLACvest]

I know from monkeying with mine. It DOES give quite a nice larger bass image and presence.

I got the idea from the "filter-free" "profile" of the (++) Treble Stem as I like to call them. It just has no filter. So I looked over my Bass Port Cap, and the (+) Cap has the same filter as the (-) Treble Stem, so I started thinking, not equivalent i.e. != ... and so I monkeyed with them and poked the filter packing out with a toothpick in one hand, stretching the lip of the inside of the Bass Port Cap with the other hand. The filter packing comes right out. No adhesive.

MAJOR improvement in sound quality in the bottom bass and overall tonality. low mids and deep (sub 10Hz) is Present. I'm pleased with the mod. It's easy enough to enjoy. I'll post pictures within the week on my Head-Fi blog.