“CanOpener conjures speakers from your headphones.”
Under the right conditions, headphones can be excellent, high-fidelity monitoring tools. In reality, though, these conditions are rarely met, and headphones often end up sounding unnatural, uninspiring, and fatiguing when listened to for long periods of time.
The main “problem" with headphones is that most music is still created (recorded, mixed, mastered) on speakers, with tools that were primarily designed for loudspeaker playback. Compared to speakers, music often sounds overly “wide" when listened to on headphones, as if there were a section missing from the center of the stereo image. Headphones also offer poor externalization (i.e. mono sounds typically appear to originate from inside the listener’s head as opposed to externally). Similarly, headphones often have irregular, exaggerated, or unnatural frequency response curves, either because they were designed that way or because they lack the natural bass reinforcement that would occur in a real room with speakers.
CanOpener Studio takes a less-is-more approach: fix the bad things about headphones with as little coloration or alteration as possible. Rather than emulate a specific studio control room or loudspeaker setup (along with all its flaws), the CanOpener crossfeed algorithm uses an idealized loudspeaker &room as its guide and gives you the control to use as much or as little of it as you need.