Quantum Leaps Forward for Creator-focused Home Recording

As home recording technologies advance, so do the creative possibilities of artists and content creators of every size or style. PreSonus’s Quantum ES 4 distills three decades of aural innovation into a powerful, flexible audio interface, primed for performance with unrivaled 24-bit/192kHz resolution. Its 4-channel design includes a quartet of mic/line inputs, as well as dual dedicated guitar inputs co-designed with Fender.

Recording experts are enamored by the interface’s masterful mix of ergonomics and sleek aesthetics, providing real-time LED feedback alongside a streamlined, user-friendly layout. Surface controls are optimized to maximize detail and control, crafted with satisfying tactility to seamlessly dial in your setup.

With versatile recording tools, custom-built low-latency drivers, robust analog mic preamps, and MIDI capabilities, the Quantum ES 4 upgrades any studio setup with uncompromising fidelity and control. Included is a 6-month subscription to Studio One Pro+, featuring add-ons, tools, and exclusive content, along with access to Studio One Professional Edition. Simply open the Universal Control app on your desktop or smart device to unlock complete control.

State-of-the-art Sound and Style

Beneath its elegant form factor, the Quantum ES 4 houses premium recording technology designed for pristine audio capture. Custom low-latency drivers are paired with high-caliber converters to ensure exceptional clarity and signal integrity from input to playback.

The combination mic/line inputs feature next-generation MAX-HD preamps, delivering up to +75dB of gain across a wide 20Hz–20kHz frequency range. Digitally attenuated analog circuitry provides unmatched transparency, while phantom power and advanced controls accommodate a broad range of microphones and vocal performances.

The built-in Auto Gain feature intelligently sets optimal input levels for microphones and instruments, helping you achieve consistent, high-quality takes every time.

Elegant Interfacing with Fender-designed Finesse

Developed in collaboration with Fender, the Quantum ES 4 is tailored for effortless recording across virtually any style or environment. Dual front-mounted instrument inputs and a convenient headphone output provide seamless plug-and-play access for guitarists and bassists.

Color-coded onboard LEDs deliver clear, real-time feedback without visual clutter. A 3.5mm MIDI I/O expands compatibility, while DC-coupled balanced stereo outputs enable control voltage (CV) signal routing to compatible synths, effects, and pedals. A built-in Loopback feature further simplifies monitoring and streaming workflows.

Universal Control & Studio One Pro+: Comprehensive Coverage Anywhere

The Quantum ES 4 combines intuitive hardware controls with the powerful Universal Control app to create a flexible and efficient recording environment. Available across smartphones, tablets, laptops, and desktops, the app allows you to capture inspiration wherever it strikes.

Universal Control manages your entire PreSonus ecosystem, including hardware drivers, DSP editing, mixing, and the integrated Studio One Pro+ toolset bundled with the Quantum ES 4, alongside Studio One Professional Edition.

What PreSonus Says...

4 x 4, 24-bit / 192 kHz Recording Interface with Studio One Pro Perpetual License Included

Capture your creativity with the Quantum ES 4 – the recording interface for self-made musicians and audio creators. The culmination of 30 years of innovation, the Quantum ES 4 features four newly redesigned high-definition MAX-HD mic preamps with +75 dB of gain, making it ideally suited for today’s most popular microphones. Guitarists and bassists will appreciate the instrument inputs, co-developed with Fender engineers. An Auto Gain button sets the perfect gain level for microphones and instruments, while an illuminated push encoder provides flexible control over gain and output volume. Bright and responsive LED metering ensures easy visual feedback for all inputs and outputs, ideal for self-produced recording.

Overview & Features:

• High Performance Signal Flow – Custom low-latency drivers and low-noise converters.
• All-New MAX-HD Mic Preamps – Redesigned preamps with digitally-controlled analog and 75 dB of gain range.
• Co-Developed with Fender® – Front-facing instrument inputs engineered for guitarists by industry-leading experts.
• Professional Recording Software Included – Studio One Pro License.
• Auto Gain – Dial in recording-ready levels, hassle-free.
• Universal Control App – Full control and metering from mobile device, desktop, or tablet.