Audiotent Tip 384. Hi-Hat Definition.
Cutting the high frequencies from a hi-hat seems like a counterintuitive idea.
However, hi-hat samples can often be over-processed and contain too much fuzzy top end.
One way to fix this is to round of the frequency at the very top end.
Use a low pass filter around 14-18kHz until the hi-hat regains definition.
This technique may also work for snares, rides or cymbal crashes.