1. Introducere
The PreSonus Quantum ES 2 is a high-performance 2x2 USB-C audio interface designed for musicians and audio creators. It features two MAX-HD mic preamps, instrument inputs co-developed with Fender, and comes with a perpetual license for Studio One Pro software. This manual provides essential information for setting up, operating, and maintaining your Quantum ES 2 interface.

Imaginea 1.1: The PreSonus Quantum ES 2 audio interface shown alongside its bundled Studio One Pro software box. This image illustrates the complete product package.
2. Configurare
2.1 Despachetarea și conținutul pachetului
Before proceeding, ensure all components are present in the package:
- PreSonus Quantum ES 2 USB-C Audio Interface
- Cablu USB-C la USB-C
- Power Supply (if not bus-powered, check specific model)
- Ghid de pornire rapidă
- Product Registration Card (for Studio One Pro license)
2.2 Conexiuni hardware
Follow these steps to connect your Quantum ES 2:
- Conectare la computer: Use the provided USB-C cable to connect the Quantum ES 2 to an available USB-C port on your computer. The device is bus-powered, but an optional Aux Power Port is available for older computer models that may require additional power.
- Conectarea microfoanelor/instrumentelor:
- For microphones, use XLR cables to connect to the Mic/Line In combo jacks on the rear panel.
- For guitars or basses, use 1/4-inch TS cables to connect to the Guitar/Bass Inputs pe panoul frontal.
- Conectați monitoare: Connect your studio monitors to the Ieșiri principale (balanced 1/4-inch TRS) on the rear panel using appropriate cables.
- Conectați căști: Plug your headphones into the Stereo Headphone Out pe panoul frontal.

Imaginea 2.1: Panoul frontal pesteview of the Quantum ES 2, highlighting 48V Phantom Power, Auto Gain, Multi-Function LED Encoder, Guitar/Bass Inputs, Responsive LED Metering, and Stereo Headphone Outs.

Imaginea 2.2: Panoul din spate pesteview of the Quantum ES 2, showing MIDI Connectivity, All-New MAX-HD Mic Preamps, Optional Aux Power Port, Bus-Powered USB-C port, and Main Outs.
2.3 Instalare software
To fully utilize your Quantum ES 2, you will need to install the necessary software:
- Înregistrați-vă produsul: Visit the PreSonus website and register your Quantum ES 2 using the provided product key. This will grant you access to your Studio One Pro license and other software downloads.
- Install Universal Control: Download and install the latest version of PreSonus Universal Control for your operating system (Windows or macOS). This application provides full control and metering for your interface.
- Install Studio One Pro: Download and install Studio One Pro from your PreSonus account. Follow the on-screen instructions for activation.
- Instalare driver: Universal Control will install the custom low-latency drivers required for optimal performance of your Quantum ES 2.
3. Instrucțiuni de utilizare
3.1 Operare de bază
- Pornire/Oprire: The Quantum ES 2 powers on automatically when connected via USB-C to your computer. To power off, disconnect the USB-C cable or use the power button on the rear panel if applicable.
- Encoder LED multifuncțional: This large knob controls various parameters. Press it to cycle through functions like input gain and output volume. Rotate to adjust the selected parameter.
- Input/Output Metering: The bright LED meters provide visual feedback for your input and output levels. Aim for levels that are strong but do not consistently peak into the red.
3.2 Input and Gain Control
- MAX-HD Mic Preamps: The two mic preamps offer +75 dB of gain. Adjust gain using the Multi-Function LED Encoder or via the Universal Control app/Studio One.
- Alimentare fantomă 48V: Apăsați tasta 48V button on the front panel to enable phantom power for condenser microphones. Ensure phantom power is only used with microphones that require it.
- Câștig automat: Apăsați tasta Auto button to automatically set optimal gain levels for your connected microphones or instruments. This feature helps achieve recording-ready levels quickly.
- Intrări instrumente: The front-facing instrument inputs are optimized for guitars and basses. Ensure the correct input is selected for your instrument.
3.3 Monitoring and Outputs
- Ieșiri principale: Control the volume of your main studio monitors using the Multi-Function LED Encoder when the main output is selected.
- Ieșire căști: Adjust headphone volume independently.
- Monitorizare software: The Quantum ES 2 relies on software monitoring through your Digital Audio Workstation (DAW). To hear your live input, you must enable input monitoring within your DAW (e.g., "Input Echo" in Cakewalk, or similar features in Studio One, Reaper, Pro Tools). This routes the input signal through the DAW to your outputs.
- Loopback Audio: This feature allows you to route audio from your computer's playback directly back into the interface for recording or streaming, simplifying the creation of monitor and streaming mixes.
3.4 Universal Control App Integration
The Universal Control app provides comprehensive control over your Quantum ES 2 settings from your computer or mobile device. This includes preamp gain, phantom power, and other critical functions, allowing for precise adjustments without interrupting your recording session.
4. Întreținere
- curatenie: Folosiți o cârpă moale și uscată pentru a curăța exteriorul unității. Evitați substanțele de curățare abrazive sau solvenții.
- Depozitare: Store the Quantum ES 2 in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Actualizări firmware: Periodically check the PreSonus website for firmware updates for your Quantum ES 2. Updates can improve performance and add new features.
5. Depanare
5.1 No Power/Device Not Recognized
- Ensure the USB-C cable is securely connected to both the Quantum ES 2 and your computer.
- If using an older computer or experiencing power issues, connect an external power supply to the optional Aux Power Port.
- Verify that the correct drivers are installed via PreSonus Universal Control.
- Try a different USB-C port or cable.
5.2 No Audio Input/Output
- Check all cable connections (microphones, instruments, monitors, headphones).
- Verify input gain levels on the Quantum ES 2 and within your DAW.
- Ensure phantom power (48V) is enabled for condenser microphones if required.
- Confirm that the Quantum ES 2 is selected as the audio input/output device in your computer's sound settings and your DAW.
- For live input monitoring, ensure input monitoring is enabled within your DAW.
- Check the LED meters on the Quantum ES 2 to see if an input signal is present.
5.3 Probleme de latență
- Adjust the buffer size in your DAW's audio settings. Lower buffer sizes reduce latency but require more CPU power.
- Ensure you are using the latest PreSonus drivers.
- Închideți aplicațiile inutile care rulează în fundal.
- For Windows users, optimizing your system for audio (e.g., disabling HPET, adjusting power modes) can help. Refer to PreSonus support resources for detailed optimization guides.
6. Specificații
| Greutatea articolului | 1.5 lire sterline |
| Dimensiunile produsului | 6.2 x 6.9 x 1.9 inci |
| Numărul de model al articolului | Quantum ES 2 |
| Dispozitive compatibile | Personal Computer, Microphone, Headphones, Speakers |
| Interfață hardware | USB |
| Software acceptat | Studio Unu |
| Sistem de operare | Windows, macOS |
| Voltage | 120 volți |
| Tehnologia de conectivitate | USB |
| Numărul de canale | 2 |
7. Garanție și asistență
PreSonus products typically come with a limited warranty. For detailed warranty information, please refer to the warranty card included with your product or visit the official PreSonus website-ul.
For technical support, driver downloads, firmware updates, and additional resources, please visit the PreSonus support page: www.presonus.com/support.





