The Culmination of 30 Years of Innovation as the ES 4 features four newly redesigned high-definition MAXHD mic preamps with over 75 dB of gain making it ideally suited for today’s most popular microphones. Guitarists and bassists will love the instrument inputs, which were co-developed with Fender engineers. With the PreSonus Quantum ES4 4x4 USB-C Audio Interface an Auto Gain button sets the perfect gain level for your microphones and instruments, while an illuminated push encoder provides flexible control over gain level and output volume. And bright and responsive LED metering provides easy visual feedback for your inputs and outputs, making it great for self-produced recording. High-Performance Signal Flow Presonus' custom low-latency driver provides exceptionally low audio latencies when recording, and high-performance converters complete the front end to ensure that you sound your best throughout the entire signal chain. All-New MAX-HD Mic Preamps The Quantum ES4 features four newly designed mic preamps with Plus75 dB of gain. The high-definition MAX-HD preamps are transparent, low-noise, and digitally-controlled analog, making them ideally suited to today’s most popular microphones. Co-Developed with Fender Built by the best ears in the business, guitarists and bassists will love the instrument inputs, co-developed with Fender engineers industry experts who designed them specifically for guitar and bass. Professional Recording Software Included Leap into 6 months of Studio One plus with access to Studio One Professional Edition, add-ons, and more. Auto Gain An Auto Gain button sets the perfect gain level for your microphones and instruments, so you get the perfect take every time. Universal Control App Quantum works on any mobile or desktop device, so you’re ready to record whenever inspiration strikes whether on your phone, tablet, or in your home studio. Critical preamp functions like preamp gain, phantom power, and more can be controlled with the Quantum ES4’s flexible front panel, or right from Studio One and the Universal Control app, so you can dial in the perfect gain staging without looking away from your recording session. Flexible Monitoring Two balanced 1/4-inch TRS main outputs plus 2 balanced 1/4-inch TRS line outputs and 2 high-power headphone outputs for flexible monitoring. And built-in speaker switching lets you check your mix on multiple sets of studio monitors