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PreSonus Quantum ES 4 USB-C Audio Interface

BH #PRQUANTUMES4 • MFR #QUANTUM ES4
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PreSonus Quantum ES 4 USB-C Audio Interface
Key Features
  • For Producers, Musicians, Creators
  • Bus/External Power
  • Mac/Windows/iOS/Android
  • 4 XLR Mic/Line Ins, 2 1/4" Hi-Z Ins
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 codeveloped 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. 
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PreSonus QUANTUM ES4 Overview

Take a Sonic Leap with the Quantum ES 4
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 codeveloped 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, codeveloped 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.
Bright LED Metering
Bright and responsive LED metering lets you keep an eye on your input and output meters, perfect when recording alone.
Professional Recording Software Included
  • Leap into 12 months of Studio One+ add-ons, exclusive content, and tools, plus a perpetual license to Studio One Professional Edition.
Key Features
  • 4x4, 24-bit / 192 kHz USB-C desktop audio interface
  • Record on desktop, laptop, phone, tablet
  • 2 1/4" Hi-Z instrument inputs co-developed with Fender engineers
  • 4 balanced combo XLR-1/4" mic/line inputs
  • 4 next-generation PreSonus MAX-HD preamps, +75 dB of gain
  • Switchable +48V phantom power
  • Custom, low-latency driver provides exceptionally low audio latencies
  • 2 balanced 1/4" TRS main outputs, 2 balanced 1/4" TRS line outputs
  • 2 high-power headphone outputs
  • Auto gain
  • Loopback audio for streaming
  • 3.5mm MIDI Type-B I/O
  • Bright LED display
  • Control settings via Universal Control app
  • Additional USB-C port provides power via wall plug/external battery when recording to a device that doesn't provide enough power via USB
  • Includes Studio One Pro, Studio One+ software
UPC: 673454012327

PreSonus QUANTUM ES4 Specs

Key Specs
Channels of I/O
4 Inputs / 4 Outputs
Maximum Sampling Rate
192 kHz / 24-Bit
Number of Microphone Inputs
4
Analog Audio I/O
4x Combo XLR-1/4" TRS Mic/Line Input
2x 1/4" TS Hi-Z Input
4x 1/4" TRS Line/Monitor Output
2x 1/4" TRS Headphone Output
Digital Audio I/O
No
Host Connection
USB-C
Power Requirements
USB Bus Power, USB Power Adapter (Not Included)
General
Display
LED
Channels of I/O
4 Inputs / 4 Outputs
Built-In DSP
No
Maximum Sampling Rate
192 kHz / 24-Bit
Number of Microphone Inputs
4
Built-In Microphone
No
Input Level Adjustment
Knob
Signal Processing
Pad
No
Gain/Trim Range
Mic Inputs:
75 dB
Hi-Z Inputs:
75 dB
Line Inputs:
-10 dB to +10 dB
High-Pass Filter
No
Solo/Mute
Mute per Master
Connectivity
Analog Audio I/O
4x Combo XLR-1/4" TRS Balanced Mic/Line Input
2x 1/4" TS Hi-Z Input
4x 1/4" TRS Balanced Line/Monitor Output
2x 1/4" TRS Headphone Output
Phantom Power
48 V, Selectable On/Off
Digital Audio I/O
No
Host Connection / USB
USB-C
Host Connection Protocol
Not Specified by Manufacturer
USB (Non-Host)
1x USB-C (Power Input)
Sync I/O
No
Network I/O
No
MIDI I/O
1x 1/8" / 3.5 mm TRS Type-B Input
1x 1/8" / 3.5 mm TRS Type-B Output
Expansion Slots
No
Wireless
No
Performance
Frequency Response
XLR Mic Inputs:
20 Hz to 20 kHz ±0.2 dB
Combo XLR-1/4" Line Inputs:
20 Hz to 20 kHz ±0.1 dB
1/4" Line Outputs:
20 Hz to 20 kHz ±0.1 dB
1/4" Hi-Z Inputs:
20 Hz to 20 kHz ±0.2 dB
1/4" Headphone Outputs:
20 Hz to 20 kHz ±0.2 dB
Maximum Input Level
XLR Mic Inputs:
+14 dBu (Balanced, Minimum Gain)
Combo XLR-1/4" Line Inputs:
+15 dBu (Balanced, Minimum Gain)
1/4" Hi-Z Inputs:
+15 dBu (Unbalanced, Minimum Gain)
Maximum Output Level
1/4" Line Outputs:
+15 dBu (Balanced)
1/4" Headphone Outputs:
7.5 dBu (at 50 Ohms)
Impedance
Mic Inputs:
1600 Ohms
Line Inputs:
10 Kilohms
Line Outputs:
51 Ohms
Hi-Z Inputs:
1 Megohm
Headphone Outputs:
22 Ohms
Dynamic Range
Digital:
120 dB
Hi-Z Inputs:
111 dBA
Line Inputs:
114 dBA
Mic Inputs:
113 dBA
Headphone Outputs:
111 dBA
Line Outputs:
117 dBA
THD
Mic Inputs:
0.001% (1 kHz, Minimum Gain)
Hi-Z:
0.002% (1 kHz, Minimum Gain)
Line:
0.001% (1 kHz, Minimum Gain)
Line Outputs:
0.001% (1 kHz, +4 dBu)
Headphone Outputs:
0.02% (1 kHz)
EIN
-129 dBu (Maximum Gain, 150 Ohms, 22 kHz BW, A-Weighted)
Digital Audio
Sample Rates
Up to 192 kHz
Sample Rate Conversion
No
Bit Depths
24-Bit
Sync Sources
Internal
Audio Storage & Playback
Media/Memory Card Slot
No
Compatibility
OS Compatibility
Computer: macOS / Windows
Mobile: Android/iOS
Power
Power Requirements
USB Bus Power, USB Power Adapter (Not Included)
Physical
Dimensions
8.4 x 6.2 x 1.9" / 21.3 x 15.7 x 4.8 cm
Weight
1.8 lb / 0.8 kg
Packaging Info
Package Weight
3.755 lb
Box Dimensions (LxWxH)
12.2 x 9.5 x 4"

PreSonus QUANTUM ES4 Reviews

Sweet Spot

By Adam
Rated 5 out of 5
Date: 2025-04-21

The ES 4 works well in a small form factor and at a reasonable price point. USB-C connectivity and power are welcome here. It is perfect for cross-platform podcast recording use cases.

See any errors on this page?

Does it require an external power supply when usin

Does it require an external power supply when using it with and iPad pro?
Asked by: Mark
Yes, the PreSonus Quantum ES 4 USB-C Audio Interface will require use of an external power supply when connected to an iPad Pro, as mobile devices often cannot provide enough bus power through a single USB-C connection. You will need to use a 5V DC, 2.6A (approximately 13W) power source connected to the aux port on the ES 4, which can be a portable USB battery power bank or wall adapter.
Answered by: Lisa S
Date published: 2026-03-01
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