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Presonus Quantum 26x32 Thunderbolt Audio Interface  From Presonus

26x32 Thunderbolt™ Audio Interface/Studio Command Center


Manufacturer's Description from Presonus

Your expandable, ultra-high definition recording system.

Taking full advantage of the high-speed Thunderbolt™ bus and ADAT Optical I/O, the PreSonus® Quantum audio interface delivers up to 26 inputs and 32 outputs, with extremely low latency. Boasting superb audio quality; 24-bit, 192 kHz recording and playback; recallable XMAX microphone preamps; and the ability to expand your system as your needs grow, it’s a great choice for a wide variety of professional and semi-pro producers and electronic musicians.


We cut the wait.

Every design decision during Quantum’s engineering was made with one goal in mind: speed. Quantum sports high-speed Thunderbolt connectivity and a no-frills, direct-to-DAW architecture, with no DSP. The result is our leanest, fastest, lowest-latency interface to date.


Cutting-edge 24-bit, 192 kHz converters with 120 dB of dynamic range and a surprising amount of expandability and software control options round out the package.


Expandable when you need more I/O—up to 96 in and out.

The Quantum audio interface offers two combo mic/line/instrument inputs and six combo mic/line inputs, each with a digitally controlled XMAX preamp and individual +48V phantom power. You also get two ¼-inch TRS main outputs, eight ¼-inch TRS aux outputs, and two independent headphone outs with dedicated volume controls. But that’s just the start. With ADAT Optical I/O and S/PDIF stereo digital I/O, you can have up to 18 digital inputs and outputs. And if you need even more I/O channels, you can stack up to four Quantum interfaces via Thunderbolt to create a monster system with up to 96 in and out. BNC word clock I/O ensures your Quantum and other digital audio devices operate in tight sync. And of course you get MIDI I/O, too.


Superior sound.

Audiophile-grade digital converters, low-jitter clocking, and recallable preamps add up to a superior recording and listening experience. The Quantum audio interface operates at up to 192 kHz for ultra-high-definition mixing and recording. High-quality converters on every input and output provide 120 dB of dynamic range to capture complex musical harmonics smoothly and naturally with no audible distortion. And our recallable XMAX Class A analog microphone preamps deliver incredibly high headroom, deep lows, smooth highs, and a rich overall sound so you’ll hear every breath, transient, and detail in your recordings.


A superior choice for any production environment.

With its pro features and abundant I/O, the Quantum audio interface fits into any recording and production environment. You get two main and eight auxiliary balanced line-level outputs, as well as Mute/Dim and Mono controls. The onboard talkback mic can be routed to any mix, and you can listen to any mix from either of two independent headphone amps. All 10 analog outputs are DC coupled so they can provide control voltage to external analog equipment. Add that to Quantum’s expandability, flexible software suite, blazing speed, and superb sound quality, and you have a recording system that will be the heart of your dream studio for years to come.


Tight integration with Studio One.

With the Quantum, your audio interface is an integrated extension of your recording environment. The perfect companion for any recording software, the Quantum comes equipped with Studio One Artist to provide you with a complete recording solution. Launch Studio One®, and you’ll find full preamp control integrated into your recording environment. Need to track away from your computer? Launch Studio One Remote on your iPad® or Android™ tablet.


Quantum customers get 50% off upgrades to Studio One Professional.


Includes Studio Magic Plug-in Suite.

This suite of plug-ins adds a wealth of fresh virtual instruments and effects to Studio One. Cherry-picked from the first names in virtual instruments and effects, each plug-in brings a different flavor of practical magic to your songs. These plug-ins aren't gimmicky one-trick ponies — these are real-deal workhorses that you'll rely on for countless mixes.



About Manufacturer

PreSonus Corporation, a developer of audio technologies for the professional and semi-professional digital audio markets, was founded in 1995 and presently has an active distribution network in place that reaches over 20 million audio consumers. PreSonus also manages a high traffic website, www.presonus.com that is experiencing over 100,000 hits per month. The Company has released 18 professional audio products that have shipped to over 41 countries. Presonus has received the Electronic Musician Magazine Editor's Choice Award for four different products. The Company's products have also been nominated several times for MIX Magazine's Technical Excellence in Creativity Awards (TEC). In all, over 150,000 PreSonus products are in use around the world. The Company's primary objective is to leverage its research and development ability, intellectual property portfolio, expertise in manufacturing, well respected brand, and established distribution channels to continue swift growth in revenue and profitability. PreSonus has exhibited consistent growth of an average of 48.6% per year over the past six years and predicts continued double digit growth rates for the next three years. PreSonus was founded on the precept of research and development in new technologies and discovery and exploitation of emerging multi-media markets. The Company has passed the 'proof of concept' stage and is presently utilizing its proprietary designs and patents to expand product offerings. PreSonus has extensive relationships in the music, technology, Internet, manufacturing and consumer electronics industries as well as a highly respected professional audio brand - PreSonus Audio Electronics. Competencies necessary to promote and support digital audio technology include qualified personnel in research, engineering, manufacturing, music and marketing as well as direct experience with branding and business development. PreSonus has developed a talented staff and exceptional reputation and is poised to take advantage of the burgeoning digital audio and digital media consumer markets.


Below are the minimum computer-system requirements for the Quantum Interface:


Mac® OS X 10.11.6 64-bit or later

Intel® Core™ i5 or better

4 GB RAM (8 GB or more recommended)



Windows® 10 64-bit or later

Intel Core i5 or better

4 GB RAM (8 GB or more recommended)


Mac and Windows Systems

Thunderbolt™ 1.0, 2.0, or 3.0 port (NOTE: Your computer's motherboard must support Thunderbolt. Thunderbolt 3 requires an adapter, not included.)

Internet connection (required for Studio One Activation and Content download)

Internal or external 7200 RPM storage drive highly recommended

30 GB hard disk space

Monitor with 1366x768 resolution


Note: The minimum system requirements may differ for DAWs other than Studio One. Please check the requirements for your DAW of choice with its manufacturer.

Note that the speed of your processor, amount of RAM and size and speed of your hard drive will greatly affect the overall performance of your recording system. Also, a more powerful system (faster processor with more RAM) will allow for lower latency (signal delay) than you might experience while monitoring audio signals.

VST Compatible 

ASIO Compatible 


Technical Specifications

Microphone Preamp

Type: XLR Female (via Combo), Balanced

Maximum Input Level: +10 dBu (Balanced, min. gain)

Gain Control Range: 60 dB

Frequency Response: 20 Hz to 20 kHz (±0.15 dB, unity gain, 48 kHz)

20 Hz to 40 kHz (±0.22 dB, unity gain, 96 kHz)

Dynamic Range: > 110 dB (A-wtd, min. gain)

Total Harmonic Distortion: < 0.005% (1 kHz, min. gain)

EIN: < -131 dBu (max gain, 40Ω, 22 kHz BW, A-wtd)

Input Impedance: 1.6 kΩ

Phantom Power: +48V, > 8 mA per input

Instrument Inputs

Type: ¼” TS Female (via Combo), Unbalanced

Maximum Input Level: +15 dBu (Unbalanced, min. gain)

Gain Control Range: 60 dB

Frequency Response: 20 Hz to 20 kHz (±0.2 dB, unity gain, 48 kHz)

20 Hz to 40 kHz (±0.6 dB, unity gain, 96 kHz)

Dynamic Range: > 106 dB (A-wtd, min. gain)

Total Harmonic Distortion: < 0.005% (1kHz, min. gain)

Input Impedance: > 1 MΩ

Line Inputs

Type: ¼” TRS Female (via Combo), Balanced

Maximum Input Level: + 18 dBu (Balanced, min. gain)

Frequency Response: 20 Hz to 20 kHz (±0.05 dB, unity gain, 48 kHz)

20 Hz to 40 kHz (±0.10 dB, unity gain, 96 kHz)

Dynamic Range: > 118 dB (A-wtd, min. gain)

Total Harmonic Distortion: < 0.005% (1 kHz, min. gain)

Input Impedance: 10 kΩ

Main and Line Outputs

Type: ¼” TRS Female, impedance balanced, DC Coupled

Maximum Output Level: +18 dBu (Balanced)

Frequency Response: 20 Hz to 20 kHz (±0.05 dB, unity gain, 48 kHz)

20 Hz to 40 kHz (±0.15 dB, unity gain, 96 kHz)

Dynamic Range: > 118 dB (A-wtd)

Total Harmonic Distortion: < 0.0035% (1 kHz, +4 dBu)

Output Impedance: 51Ω

Headphone Outputs

Type: ¼” TRS Female, Stereo, Unbalanced, x2

Maximum Output Level: 175 mW/channel (56Ω load)

Frequency Response: 20 Hz to 20 kHz (±0.5 dB, 48 kHz)

Dynamic Range: > 110 dB (A-wtd)

Total Harmonic Distortion: < 0.03% (1 kHz)

Headphone Impedance (working range): 16Ω to 300Ω


Input to Input: < -110 dB

Output to Output: < -115 dB

Input to Output: < -120 dB

Signal Level LEDs

Clip: -0.5 dBFS

Signal 1: -2 dBFS

Signal 2: -4 dBFS

Signal 3: -6 dBFS

Signal 4: -10 dBFS

Signal 5: -20 dBFS

Signal 6: -30 dBFS

Signal 7: -50 dBFS

Digital Audio

Connection Type: Thunderbolt*

ADC Dynamic Range: 120 dB (A-wtd)

DAC Dynamic Range: 120 dB (A-wtd)

Bit Depth: 24 bits

Internally Supported Sample Rates: 44.1, 48, 88.2, 96, 176.4, 192 kHz


Jitter: < 70 ps RMS (20 Hz – 20 kHz)

Jitter Attenuation: > 60 dB (1 ns in => 1 ps out)


12 VDC, 5A, external power supply



Height: 1.75" (44.45 mm)

Depth: 7" (177.8 mm)

Width: 19" (482.6 mm)

Weight: 6 lbs (2.72 kg)

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