PreSonus Quantum ES 4 USB-C Audio Interface The Quantum ES 4, the latest evolution in PreSonus audio interfaces, epitomises nearly three decades of PreSonus expertise, offering musicians and content creators the ultimate recording toolWith our custom low-latency driver, you'll experience minimal signal delay during recording, while high-performance converters ensure optimal sound quality throughout your signal chain. Featuring four newly designed mic preamps with +75 dB of gain, the Quantum ES 4 boasts high-definition MAX-HD preamps that are transparent, low-noise, and digitally controlled analogue, perfect for today's most popular microphones. Designed by top industry professionals, guitarists and bassists will appreciate the instrument input co-developed with Fender engineers, crafted specifically for guitar and bass. Enjoy six months of Studio One+ with access to Studio One Professional Edition, add-ons, and more. The Auto Gain button automatically adjusts to the perfect gain level