Arturia DrumBrute Impact Special Edition Noir Analog Drum Machine (Black) Bundle with Polsen HPC A30 MK2 Studio Monitor Headphones and 1 4" Phone to Phone Cable Kentmere All the optics are multi coated RM12MICDK1 All the optics are multi coated for minimal flare and ghosting and a manual focusing ring is included for focusing anywhere from 8" to infinity Smooth frequency response from 50 Hz to 18 kHz with a gradual presence rise and minimal off axis coloration Plus a Kopul 3000 Series 1 4" Male to 1 4" Male Instrument Cable (10') designed for connecting guitars to amplifiers or any other application where a 1 4" instrument or unbalanced line level connection is required which adds another layer of performable sound parameters