PreSonus Quantum ES 4 4x4 USB-C Audio Interface

zZounds Gear Experts Say...
PreSonus packs a lot into this desktop interface: 4 MAX-HD mic pres with 75 dB gain, 2 Fender-designed Hi-Z ins, Auto Gain, bright LED metering, and more.

Capture your creativity with the Quantum ES 4 -- the recording interface for self-made musicians and audio creators. The Quantum ES 4 is the culmination of nearly 30 years of PreSonus expertise, providing the ultimate recording tool for musicians and content creators.

Features:

- 4 x 4, 24-bit / 192 kHz USB-C Audio Interface
- High-performance converters let you hear and capture audio with stunning clarity and fidelity.
- Custom low-latency driver provides exceptionally low audio latencies when recording.
- Next-generation PreSonus MAX-HD preamp design provides transparency and accuracy across the frequency range with +75 dB of gain to maximize the performance for a wide range of today's most popular microphones for modern recording and broadcast.
- Auto Gain button sets the perfect gain level for your microphones and instruments, so you get the perfect take every time.
- Control your Quantum ES right from Fender Studio Pro and the Universal Control app, in addition to hardware, so you can adjust preamp gain, toggle phantom power, adjust channel settings, and more without looking away from your recording session. Perfect for dialing in optimal gain staging.
- Bright and responsive LED metering lets you keep an eye on your input and output meters, perfect when recording alone.
- 2 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 read more multiple sets of studio monitors.
- Loopback audio makes creating monitor and streaming mixes quick and easy.
- Professional recording software included - Fender Studio Pro perpetual license

THE CULMINATION OF 30 YEARS OF INNOVATION
The ES 4 features four 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 love the instrument inputs, which were co-developed with Fender engineers. 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's 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.

MAX-HD MIC PREAMPS
The Quantum ES 4 features four designed mic preamps with +75 dB of gain. PreSonus's 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 input co-developed with Fender engineers - industry experts who designed them specifically for guitar and bass.

PROFESSIONAL RECORDING SOFTWARE INCLUDED
Your PreSonus Quantum ES 4 hardware registration includes a perpetual license to Fender Studio Pro.

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 4's top panel, or right from Fender Studio Pro and the Universal Control app, so you can dial in the perfect gain staging without looking away from your recording session.
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- Interface Type: 4x4 USB-C Audio Interface
- Connectivity: USB-C
- USB Standard: USB 2.0
- Bit Depth: 24-bit
- Sample Rate: 44.1, 48, 88.2, 96, 176.4, 192 kHz
- Analog Inputs: 4 x Combo XLR/TRS (Mic/Line), 2 x 1/4" TS (Instrument)
- Analog Outputs: 4 x 1/4" TRS balanced (2 Main + 2 Line), 2 x 1/4" TRS headphone
- Digital I/O: None
- Microphone Preamps: 4 x MAX-HD Preamps
- Phantom Power: +48V per channel
- Input Impedance: 1600 Ohms (Mic), 10K Ohms (Line), 1 Megohm (Hi-Z)
- Output Impedance: 22 Ohms (Headphone)
- Dynamic Range: 113 dB (Mic inputs), 114 dB (Line inputs), 111 dB (Instrument inputs), 117 dB (Line outputs)
- Frequency Response: 20 Hz to 20 kHz ±0.2 dB (Mic/Instrument), ±0.1 dB (Line)
- THD+N: 0.001% (1 kHz, minimum gain)
- EIN: -129 dBu (max gain, 150 Ohm, 22 kHz BW, A-weighted)
- Gain Range: 0 dB to +75 dB (Mic preamps), -7 dB to +68 dB (Instrument)
- MIDI I/O: 3.5mm TRS I/O
- Power Source: USB-C bus power or external USB-C power adapter (5V DC, 2.6A)
- Compatibility: Mac, Windows, iOS, iPadOS, Android
- Latency: Custom low-latency drivers

Dimensions and Weight in Packaging

Base Item

  • Shipping Weight: 3.75 lbs
  • Shipping Dimensions: 12 x 9 x 4 in
  • Manufacturer Part Number (MPN): 2777700504

For support or warranty questions, please contact the manufacturer:
Phone: 225-216-7887
Web: https://support.presonus.com

Reviewers gave this product an overall rating of 4 out of 5 stars. (2 ratings)
Submitted December 26, 2025 by Marc A in Windsor, CT

"GREAT…until?"

Overall: 4 out of 5 stars
(see rating details)
Verified Purchaser zZounds has verified that this reviewer purchased this specific product from us.
I’ve had the ES 4 about better than a year and everything was top notch, working great. Then I became an Apple user…….. I fully disclose I’m a retired home hobbyist,,barely an intermediate and definitely a pedal abuser lol. The ES4 stopped working- new routings hardware wise is my less than educated guess was the problem.If I was staying on Windows I’d probably stay with the ES4 although hindsight HD8 is probably the best value for the dollar so if you’re a home hobbyist getting serious but still not ready to drop 5/10 grand overall….. the HD8 will get professional level work flow accomplished.I am going with a simpler interface and small mixer…(because I’m a fun loving retired hobbyist just enjoying it all)….of course through Zz, great business with A+ customer service

Musical Background:

Campfire,,garage jams

Musical Style:

Metal, synth metal, oldies
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