I don't know if this will distort your LCD-i3, but you can try. Put this in a .txt and import it into Equalizer APO with Peace GUI. Maybe someone can help you. Need a big amp to power this with tons of EQ. Here, two presets, one that I create, and other that is the presets of AutoEQ project:

(1)

Preamp: -19.2 dB

Filter 1: ON PK Fc 20 Hz Gain 3.2 dB Q 2.000

Filter 2: ON PK Fc 37 Hz Gain 11.0 dB Q 0.500

Filter 3: ON PK Fc 39 Hz Gain -1.4 dB Q 1.700

Filter 4: ON PK Fc 100 Hz Gain 0.8 dB Q 1.500

Filter 5: ON PK Fc 1000 Hz Gain -6.6 dB Q 0.900

Filter 6: ON PK Fc 1600 Hz Gain -4.6 dB Q 2.000

Filter 7: ON PK Fc 2400 Hz Gain 4.0 dB Q 2.000

Filter 8: ON PK Fc 4000 Hz Gain 12.0 dB Q 0.500

Filter 9: ON PK Fc 4800 Hz Gain 9.2 dB Q 2.000

Filter 10: ON PK Fc 6100 Hz Gain -2.6 dB Q 2.000

Filter 11: ON PK Fc 9600 Hz Gain -3.1 dB Q 2.000

(2)

preamp: -7.0 dB

Filter 1: ON LS Fc 105 Hz Gain 5 dB Q 0.7

Filter 2: ON PK Fc 1539 Hz Gain -10.0 dB Q 1.56

Filter 3: ON PK Fc 1955 Hz Gain -3.1 dB Q 1.98

Filter 4: ON PK Fc 3638 Hz Gain 7.6 dB Q 1.58

Filter 5: ON PK Fc 5694 Hz Gain 5.1 dB Q 3.55

Filter 6: ON PK Fc 82 Hz Gain -0.8 dB Q 1.75

Filter 7: ON PK Fc 755 Hz Gain 0.5 dB Q 2.32

Filter 8: ON PK Fc 6349 Hz Gain 1.7 dB Q 6

Filter 9: ON PK Fc 9581 Hz Gain 2.6 dB Q 3.33

Filter 10: ON HS Fc 10000 Hz Gain -8.6 dB Q 0.7

Do you have the cipher cable or just the LCD-i3?

Which headphone are you using? This is important to understand what "dynamics" you are talking about.

About Harman Target "average to the masses", it's not just "average to the masses". I don't know why audiophiles think they're special people (sorry for that aggressive take). Harman Target is the same as "two deadly neutral speakers in your head" with a little more bass, and all people like neutral speakers in blind tests (they tested in research). It's not just a "average to the masses", it's sound fidelity.

Maybe you like some "coloration" in the sound of you headphone, that's not a problem. And obviously the Harman Target isn't perfect, it's an average, we have some differences in HRTF and bass volume preferences for example. To solve this, you need to EQ with a tone generator using your own ears.