The PreSonus Quantum ES 4 is a 4×4 USB-C audio interface designed for musicians and creators, featuring four MAX-HD mic preamps with 75 dB gain and Fender co-developed instrument inputs. With 24-bit/192 kHz converters, Auto Gain for effortless setup, and loopback audio for seamless streaming, it’s perfect for studio and live use. Compatible with Mac, Windows, iOS, and Android, it includes professional recording software and a 6-month Studio One Pro membership. Auto Gain & Remote Control The Auto Gain function automatically sets the perfect input level for microphones and instruments, eliminating guesswork and optimizing recording quality. With the Universal Control app, you can adjust preamp settings, monitor levels, and toggle phantom power from your desktop or mobile device, ensuring total flexibility in any recording setup. MAX-HD Preamps Featuring four next-gen MAX-HD preamps with 75 dB of gain, the Quantum ES 4 ensures crystal-clear, low-noise recordings. These digitally controlled preamps provide exceptional transparency, making them ideal for professional microphones. Control settings directly from Studio One or the Universal Control app for seamless workflow integration. Main Features 4×4, 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 Specifications 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 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 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-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 Frequency Response: XLR Mic Inputs: 20 Hz to 20 kHz ±0.2 dB 1/4″ Hi-Z 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″ Headphone Outputs: 20 Hz to 20 kHz ±0.2 dB Maximum Input Level: XLR Mic Inputs: 14 dBu (Balanced, Minimum Gain) 1/4″ Hi-Z Inputs: 15 dBu (Unbalanced, Minimum Gain) Combo XLR-1/4″ Line Inputs: 15 dBu (Balanced, 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 Mic Inputs: 113 dBA Hi-Z Inputs: 111 dBA Line Inputs: 114 dBA Line Outputs: 117 dBA Headphone Outputs: 111 dBA Digital: 120 dB 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) Sample Rates: Up to 192 kHz Sample Rate Conversion: No Bit Depths: 24-Bit Sync Sources: Internal Media/Memory Card Slot: No OS Compatibility: Computer: macOS / Windows Mobile: Android/iOS Mobile App Compatible: Yes: Android & iOS Functionality: Adjust Settings, Remote Control Power Requirements: USB Bus Power, USB Power Adapter (Not Included) 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
