Fearless Audio ACME adapted a nearly 23mm labyrinth tube makes the lower frequencies more resilient, deeper and more quality. Medium frequency female voice is sweet but not bored. High frequency ductility is also very good, through the addition of ultra-high frequency makes the whole band sound very plump
Through a 3d-printed sound tube, ACME8 has a large low-frequency gain, low-frequency diving depth, good focusing power, and build a good low-frequency atmosphere. In the middle frequency, reflects the mellow male voice, masculine without losing details. High frequency transparent and more amazing, the level of sound more distinct, overall quality is high.