PreSonus Quantum ES 4 - USB-C Audio Interface with Ultra-Low Latency
The PreSonus Quantum ES 4 is a compact and powerful
USB-C audio interface designed for musicians, producers, and engineers who
demand professional sound quality and extremely low latency. With 4×4
simultaneous I/O, high-performance mic preamps, and direct USB-C
connectivity, the Quantum ES 4 integrates seamlessly with modern DAWs and
high-resolution recording workflows. Its portable yet robust design makes it ideal
for home studios, project studios, and mobile production setups.
Key Features
- 4×4 USB-C Audio Interface - Four inputs and four outputs for flexible recording and routing.
- Studio quality mic preamps - Two PreSonus XMAX-L solid-state preamps with +48V phantom power.
- Ultra-Low Latency Performance - Optimised for real-time tracking and monitoring.
- High-Resolution Audio - Up to 24-bit / 192 kHz recording and playback.
- Direct Monitoring - Zero-latency hardware monitoring for confident recording.
- MIDI I/O - Connect keyboards, controllers, and external sound modules.
- Portable & Rugged Design - Suitable for studio, stage, and mobile use.
- Studio One Integration - Tight integration with PreSonus Studio One and included software bundle.
Technical Specifications
| Computer Connection | USB-C (USB 3.0) |
|---|---|
| Simultaneous I/O | 4 × 4 |
| Mic Preamps | 2 × PreSonus XMAX-L solid-state preamps with +48V phantom power |
| Line / Instrument Inputs | 2 × balanced line / instrument inputs |
| Line Outputs | 4 × balanced TRS outputs |
| Headphone Output | 1 × headphone output with independent level control |
| MIDI I/O | MIDI In / Out |
| Audio Resolution | 24-bit / 192 kHz |
| Monitoring | Direct hardware monitoring (zero latency) |
| Power Requirements |
USB-C bus-powered (minimum 5V / 3A). For stable operation with phantom power or full I/O usage, an external USB-C PD power supply (5V / 3A or higher) is strongly recommended. |
| Dimensions (H × W × D) | Approx. 44 × 180 × 135 mm |
| Weight | Approx. 1.1 kg |
Why Choose the PreSonus Quantum ES 4?
The Quantum ES 4 offers an excellent balance of professional
performance and portability. Its fast USB-C connection, high-quality preamps, and
ultra-low latency monitoring make it a reliable centrepiece for recording vocals,
instruments, and MIDI devices-whether you're working in a home studio or on the go.
Compatibility
Fully compatible with PreSonus Studio One and all major DAWs,
including Ableton Live, Logic Pro, Pro Tools, and Cubase. Supported on
macOS and Windows systems via USB-C.