neopixel nbv4 speaker whine

i finally fully assembled my saber!!! its turned out great...but

on my green program especially you can hear a certain whine to the sound

https://imgur.com/gallery/M3Atydr

i have clash set to 1023,1023,1023 or "white" and the clash sounds start to crackle and static after about 1/3 discharge

without the blade everything sounds great, i've tried reformatting the SD card

its my first build, so i had my share of troubles along the way...could it be the amp?

am i expecting too much from the battery? or should i rewire it?

Which battery are you using, and what resistors do you have on your LEDs? Also is the battery fully charged?

Panasonic Li-Ion 18650 3.7V 10A 3200mAh PCB Protected Rechargeable Battery

330 ohm SMD 0603 resistor in the blade

20mA DynaOhm™ Variable Resistor on the switch LED

When green, I hear the faint whine, even on a full charge.

it does get worse as the battery discharges

What wire gauge are you using, particularly for power to board and strips? On my first neopixel build I had a similar issue but it was because of the wires being too thin, I changed out to 26 awg and it worked perfectly.

26awg here also