The Mackie MP-240 are hybrid dual-driver in-ear headphones designed to provide enhanced sound isolation and full-range frequency reproduction for musicians, vocalists, and audio engineers in studio recording sessions and live stage applications. The high-performance dynamic and balanced armature drivers in each headphone yield a frequency response of 20 Hz to 20 kHz with an emphasis on balanced bass and articulate upper frequencies. The headphones feature a low-profile design utilizing molded enclosures for an ergonomic fit and up to 40 dB of noise isolation. MMCX connectors allow the shielded braided cable to be detached for easy storage or replacement. Accessories supplied with the MP-240 include foam, silicone, and double-flange eartips in multiple sizes, a gold-plated 3.5mm to 1/4" adapter, and a molded hard carry case.