Mackie MC-350 Professional Closed-Back Headphones

The Mackie MC-350 is a wired professional closed-back headphone designed for focused monitoring, recording, mixing, and everyday listening. Its closed-back construction helps keep external sound out while reducing sound leakage to the surrounding space. It is a practical option for creators, DJs, musicians, and listeners who need a private wired listening solution.

Large 50 mm dynamic transducers provide the MC-350's monitoring platform, with a stated 20 Hz to 20 kHz frequency response. Mackie specifies a 32-ohm impedance, 97 dB/mW sensitivity, and 20 mW maximum input power. The precision-tuned enclosures are intended to deliver clear detail, controlled low frequencies, and defined high-frequency information.

The MC-350 is built for sessions that require consistent fit and isolation. A premium real-leather adjustable headband and conforming ear pads support an ergonomic over-ear fit. The closed enclosure is suited to studio tracking, DJ work, critical listening, and personal playback where environmental noise can be distracting.

Three detachable cables are included to suit different listening setups. The 9.8-foot straight cable uses a locking bayonet connector, while the two 4-foot alternatives include one coiled cable and one straight cable with phone control and microphone. A gold-plated 1/4-inch adapter allows connection to equipment with a 6.35 mm stereo headphone jack.

The MC-350 folds for more compact storage and travels in its included protective case. Connect it directly to a stereo 1/8-inch headphone output, or add the included adapter for a 1/4-inch headphone output. This makes it an easy wired monitoring addition for recording interfaces, mixers, headphone amplifiers, portable players, and other compatible audio sources.

Key Features

• Closed-Back Monitoring: Helps isolate your listening from nearby ambient sound.
• 50 mm Dynamic Drivers: Supports full-range wired headphone monitoring.
• 32-Ohm Impedance: Matches a wide range of headphone outputs.
• Three Detachable Cables: Provides straight, coiled, and mobile-control cable options.
• Locking Bayonet Connection: Secures the main cable to the headphone.
• Protective Travel Case: Stores the foldable headphones and included accessories.

Design & Installation

The MC-350 combines a rugged closed-back design with a premium real-leather adjustable headband, conforming ear pads, and L/R position markings inside the headband. Its collapsible fold-up structure is designed for compact storage and portability. The supplied protective case helps keep the headphones and cables together between sessions.

No vehicle mounting or permanent installation is required. Attach a supplied cable to the left earcup by aligning its notches, inserting it, and turning it clockwise one-quarter turn to lock; then connect the 1/8-inch plug to a compatible stereo output. For a 1/4-inch headphone output, thread on the included gold-plated adapter; begin playback at low volume and raise it gradually.