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PreSonus Quantum ES 4 USB-C Audio Interface Certified Open Box

4-in/4-out, 24-bit/192kHz Audio Interface with 4 x Mic/Line In, 2 x Guitar In, Headphone Out, MIDI 3.5mm TRS I/O, 4 x Mic Preamps, USB-C Port, Auto Gain, Loopback - Mac, Win, iOS, iPadOS, Android
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Item ID: QuantumES4d3
PreSonus Quantum ES 4 USB-C Audio Interface

Certified Open Box Savings!

Save $37.80 What is Certified Open Box?

The price below reflects your savings.

Price:$340 and 19 cents
Savings: $37.80

New for $377.99

Condition Notes:

This returned item is in excellent condition and perfect working order. Includes all original accessories. This item ships in its original factory packaging.

This item was thoroughly inspected by our factory-authorized service team and is backed by Sweetwater's exclusive 2-year warranty. The images shown do not necessarily represent the condition of this particular item.

1 more Certified Open Box item available starting at $323 and 96 cents!
$57.00 suggested monthly payments with 6 month financing‡ 36 month financing available* with $499 minimum purchase of select Charvel, EVH, Fender, Fender Studio, Gretsch, Jackson, PreSonus or Squier products on one invoice.

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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 at Sweetwater are enamored by the interface’s masterful mix of ergonomics and sleek aesthetics, providing real-time LED feedback alongside a streamlined, user-friendly interface. Surface controls are optimized to maximize detail and control, crafted with a 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 stands to upgrade any studio setup with uncompromising fidelity and control.

State-of-the-art sound and style

Beneath its elegant form factor, the Quantum ES 4 contains an armada of premium recording tech. Custom designed low-latency drivers are complemented by high-caliber converters to maximize clarity and signal preservation, ensuring that audio is crystal clear and brimming with detail from input to playback. For its pair of combination mic/line jacks, PreSonus debuted their next-gen MAX-HD preamps, capable of up to +75dB of gain across a formidable 20Hz–20kHz range, resulting in unmatched transparency and clarity via digitally-attenuated analog character. With impressive preamp gain, phantom power, and further controls, the flexible interface seamlessly accommodates a diverse array of microphone styles and vocal deliveries for live, studio, and broadcast excellence. What’s more, the Quantum ES 4’s Auto Gain capability dials in the optimum gain levels for microphone and instrument signals, teeing you up for the perfect take every time.

Elegant interfacing with Fender-designed finesse

Through a collaborative effort with Fender, the Quantum ES 4 was engineered to facilitate recording for virtually any style and environment, including a pair of front-mounted instrument inputs and headphone output, providing guitarists and bassists with pain-free plug-and-play accessibility. Onboard LEDs give users color-coded real-time feedback through a thoughtfully-arranged interface, intentionally designed to deliver relevant details without distraction. To expand the interface’s interoperative potential, the Quantum ES 4 features a 3.5-millimeter MIDI I/O, while its balanced stereo output jacks are DC-coupled, opening the possibility of sending CV signals to compatible modules, synthesizers, effects units, or pedals. Plus, the Quantum ES 4 includes a built-in Loopback capability, making quick work of crafting monitor or streaming mixes.

PreSonus Quantum ES 4 Features:

  • Versatile 4-in/4-out interface utilizes cutting-edge design and lightning-fast USB-C connectivity to support multitudes of creative possibilities in any studio arrangement
  • Elegant form factor blends ergonomic accessibility with a minimal footprint, ensuring maximum control without sacrificing real estate in your setup
  • Co-designed by Fender to include two dedicated, front-mounted instrument inputs, affording guitarists and bassists a flexible, clear plug-and-play architecture
  • Auto Gain function matches gain levels for your mic or instrument signal to optimize input for peak-free recording
  • MAX-HD preamps supply next-gen clarity via digitally controlled analog processing with up to +75dB of gain and unrivaled transparency
  • Loopback support means monitor and streaming mixes are painlessly produced whenever needed
  • Universal Control App guarantees comprehensive control over interface capabilities to make solo, group, live, studio, and broadcast capture a breeze
  • Rear-mounted 3.5mm TRS MIDI I/O expand production, composition, and recording opportunities to accommodate numerous styles and configurations
  • Vivid LED metering provides a balance of detailed information in real time, without disrupting your recording experience
What is Certified Open Box Gear?

At Sweetwater, we're so picky that what we call "Certified Open Box" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

Certified Open Box (also known as a demo) means we’ve had it out of the box for our YouTube channel, displayed at events, tested in our studio, or maybe it was in a customer’s hands for a few days and isn’t ‘factory fresh’ as a result. Every Certified Open Box item we sell has Sweetwater’s 2-year Total Confidence Coverage™ warranty and has been tested and verified up to ‘new’ specs by our factory-authorized technicians to make sure it’s in perfect working order before we ship it to you.

When you buy a Certified Open Box item at Sweetwater, you get:
  • 2-year Total Confidence Coverage Warranty™!
  • Products inspected and tested by our factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Equipment that will MEET or EXCEED your expectations!

Click HERE to browse our current inventory of Certified Open Box equipment. Purchasing Certified Open Box gear from Sweetwater is a smart and safe way to save!

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Tech Specs

  • Computer Connectivity: USB 2.0
  • Form Factor: Desktop
  • Simultaneous I/O: 4 x 4
  • Number of Preamps: 4
  • A/D Resolution: 24-bit/192kHz
  • Analog Inputs: 4 x XLR-1/4" combo (mic/line), 2 x 1/4" (insturment)
  • Analog Outputs: 4 x 1/4" TRS
  • Headphones: 2 x 1/4" TRS
  • MIDI I/O: 2 x 1/8", In/Out
  • USB: 1 x USB-C (aux), 1 x USB-C (power/computer)
  • Software: Fender Studio Pro
  • OS Requirements - Mac: macOS 10.13 or later
  • OS Requirements - PC: Windows 10 or later
  • Bus Powered: Yes
  • Power Supply: USB bus powered (2nd Aux USB source may be required)
  • Height: 1.9"
  • Width: 6.2"
  • Depth: 8.4"
  • Weight: 1.8 lbs.
  • Manufacturer Part Number: 2777700504

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Sweetwater Sales Engineers are a world-class team of experts dedicated to you. Hand selected from across the globe, each brings a wealth of experience and expertise in the world of music gear to provide you with unparalleled service completely free of charge. Friendly relationships, real trust, and the right gear are only a call or a click away!

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Reviews

EZ PZ
Another great interface from Presonus! Super easy to set up and use. I love the 2 guitar inputs in the front. The blue lights fit perfect in my studio due to all the blue LED lights. Studio B. The B stands for blue. I live the 2 headphone jacks in the front as well. You can switch between headphones and main monitor speakers at the press of a button. Main color is blue. Headphones are green.
Thanks to my sales engineer Eric Rojas for the professional expertise and suggestion of this interface.
Music background: playing electric guitar for 44 years
ES 4 UBS-C Audio Interface
This audio interface that I bought from Sweetwater is just what I needed for my home studio. Really does make a difference when one has the right equipment. Have always selected Sweetwater for all my equipment over the years and I recommend them highly.
Music background: Music Producer.
Perfect Plug and Play with Studio One and Outboard gear
After multiple failed attempts with unreliable and complicated interfaces the Quantum is breath of fresh air. Plug and play. routed Output 3 into my daisy chained Presonus Studio Channel into an SPL Vitalyzer back into Input 3. Works perfect with signal mix control using the Universal Control app. Also in studio one, you can easily create i/o slots for Channels 3 and use the hardware as a VST. Brilliant.
Turning Out To Be All I Need
Bought this as a compliment/more mobile sibling to an old 003+ rack mount unit. I have evolved into more solo/duo acoustic sessions versus larger band stuff. The ES4 is a workhorse for that. The preamps are excellent. I love the headphones set up and sound quality is a huge step up for me. Wish I had done this sooner!
Music background: Acoustic Solo/Duo performer, live sound engineer, aspiring recording engineer
Great Value

You can't go wrong with Presonus.

Stable and versatile.

Best interface under $

Music background: base,keys,saxophone,vocals

Sweetwater and PreSonus go way back, and that makes a lot of sense. Like Sweetwater, PreSonus is largely staffed by active musicians, songwriters, live sound techs, and engineers, and like Sweetwater, their culture shows up in everything they do. Early on, PreSonus broke ground by offering super-affordable audio interfaces that brought quality recording to home studio engineers everywhere. In the following years, we've been with them as they introduced a powerful, artist-friendly DAW, groundbreaking digital mixers, and more - all products we at Sweetwater use ourselves. One thing that's never changed, even as PreSonus has branched out into new territory, is that they've always done everything possible to provide you with the best value, and we're proud to stand by their products.