PreSonus Quantum ES4

4-in/4-out USB Audio Interface

Take the leap with the Quantum ES 4. The next generation of PreSonus audio interfaces, the Quantum ES 4 is the culmination of nearly 30 years of PreSonus expertise, delivering pristine preamps and class-leading converters for self-made audio creators.

High Performance Signal Flow

Our 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 your entire signal chain.

All-new Max-HD Mic Preamps

The Quantum ES 2 features two newly designed mic preamps with +75 dB of gain. The culmination of 30 years of innovation, 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 input 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+ 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 ES 2’s top 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.