A lot of sound cards claim to have a Hi-Z instrument input. But in reality, the input impedance is not high enough to make your pick-ups work properly. And that has a displeasing effect on your instrument's signal. If you use one of these types of soundcards, you definitely need DIFIX to make your directly recorded guitars or bass sound right.

What it does

Soundcard's instrument input is not the same as a proper DI-box. When plugging your guitar or bass directly in it your recording may lose brilliance and sound really dull. DIFIX uses multi-band dynamic processor to level the sound and adds a little bit of analogue saturation as if you used a real DI-box.