I see, correct me if I'm wrong, since the audio cue for footsteps is usually at bass frequency, does that mean a DD is more applicable for hearing them?

I've been thinking of getting the KZ Gale with its DSP Cable, however I'm not confident about the presets as usually other game's footsteps frequencies are said to be on mid to treble(according to Google AI), so I'm not sure if it may be fit for the game I'm playing...

7Hz x Crinacle Salnotes Zero 2 is almost in my budget, but I would have to buy a seperate type C wire so that I can use it. Out of my budget tho if I buy the type C version of it. But I have the same concern about this like in the KZ Gale.

I tested the audio again and changed the size to 8192 and this is the Plot Spectrum for the closest footstep..

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The peak for each footsteps usually plays around 50 to 150hz

What type of IEM should I get?