The culmination of nearly 30 years of design experience, the PreSonus Quantum ES 4 is a 4x4 USB-C desktop audio interface ideal for producers, musicians, and creators looking for high-fidelity audio for the studio or live onstage. The ES 4 features four high-definition MAX-HD mic preamps with +75 dB of gain, ideally suited for today's most popular microphones. Guitarists and bassists will love the front-facing instrument inputs, which were co-developed with Fender engineers. High-performance 24-bit / 192 kHz converters let you hear and capture audio with stunning clarity. Use the Quantum ES 4 to record to a Mac/Windows computer or on your iOS/Android phone or tablet.

An Auto Gain button sets the perfect gain level for your microphones and instruments, hassle-free. The loopback audio makes creating monitor and streaming mixes quick and easy. You can utilize the Universal control app to record straight to your mobile device or remotely control the Quantum ES 4. Professional recording software is included to get your productions started right away.

High-Performance Signal Flow

• Presonus' custom low-latency driver provides exceptionally low audio latencies when recording.
• 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 ES 4 features four all-new next-generation PreSonus MAX-HD preamps that provide transparency and accuracy across the frequency range with +75 dB of gain, to maximize the performance of today�s most popular microphones for modern recording and broadcast.
• These proprietary high-definition MAX-HD preamps are transparent, low-noise, and can be digitally controlled from the Studio One DAW or the Universal Control app.
• Discreet phantom power means consistent, full power for microphones that require it, so you�ll get the most from your high-performance studio microphones.

Instrument Inputs Codeveloped with Fender

• Built by the best ears in the business, guitarists and bassists will love the Hi-Z instrument inputs, co-developed with Fender engineers�industry experts who designed them specifically for guitar and bass.

Auto Gain

• An Auto Gain button sets the perfect gain level for your microphones and instruments, so you get the perfect take every time.

Flexible Monitoring Options

• 2 balanced 1/4" TRS main outputs, 2 balanced 1/4" TRS line outputs, and two high-power headphone outputs give you flexible monitoring, while built-in speaker switching allows you to check your mix on multiple sets of studio monitors.

Universal Control App: Record on Desktop and Mobile Devices

• 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.
• Control your Quantum ES 4 right from Studio One and the Universal Control app�in addition to hardware. You can adjust preamp gain, toggle phantom power, channel settings, and more without looking away from your recording session. Perfect for dialing in optimal gain staging.