Audeze - MM520 (Pre-Order) Open Back Planar Headphone A Signature Tool for Mixing Our most purpose-built headphone for recording and mixing just leveled up. Meet the MM-520, designed with our latest acoustic technologies for bass that digs deeper and hits tighter, and even more accurate midrange expression. Improved earpads with magnetic attachment upgrade the comfort and convenience of this reliable studio companion. Join 18-time Grammy-winning engineer Manny Marroquin and the thousands of professionals worldwide who trust our MM-Series with their mixes. Developed in close collaboration with 18-time Grammy-winning mix engineer Manny Marroquin, the MM-520 is a purpose-built tool designed to deliver mixes that translate perfectly across any system. By incorporating SLAM™ technology, the MM-520 optimizes air pressure within the earcup to enhance low-frequency impact and soundstage transparency without sacrificing the mid-range neutrality that made the original MM-500 a studio staple. Engineered to Outperform MM-520's planar magnetic drivers have been refined and perfected in our Southern California workshop, integrating our patent-pending SLAM technology to provide the low-end definition and midrange precision that engineers like Manny stake their work upon. Comfort and Convenience Enjoy luxurious comfort for marathon mix sessions from MM-520's upgraded memory foam earpads. Magnetic attachment makes maintenance and cleaning easy as a snap. Feature Set includes: MM-520 Headphone 2.5m (8.2ft) headphone cable 3.5mm to 6.3mm adaptor Standard Travel Case MM-Series Soft Carry Bag Specifications Style Over-ear (circumaural), open-back Transducer type Planar Magnetic Magnetic structure Fluxor™ magnet array Phase management Fazor™ Acoustic management SLAM™ Magnet type Neodymium N50 Diaphragm type Ultra-Thin Uniforce™ Transducer size 90 mm Maximum SPL >130dB Frequency response 5Hz - 50kHz Impedance THD 18 ohms 100mW Maximum power handling 5W RMS Weight 555g Shipping Weight 6 lbs. Package dimensions 16 L x 14 H x 8 W in.