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The Quantum HD8 is a sound card from Presonus.
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Quantum HD8 highlights
- High signal flow performance - Low-latency custom drivers and low-noise converters.
- All-new MAX-HD mic preamps - The culmination of 30 years of innovation, our uncompromisingly redesigned preamps feature analog-to-digital control and a gain range of over 75 dB.
- Co-developed with Fender - Front-panel instrument inputs designed for guitarists by the industry's leading experts.
- Automatic gain - Easily achieve recording-ready levels.
- Output reamping - Reamp audio directly from your DAW and sculpt your sound by experimenting with amps and effects.
- Universal Control app - Full control and level indication from your mobile device, computer or tablet.
Quantum HD8 Key Features

MAX-HD preamps for exceptional sound quality
The Quantum HD 8 from PreSonus is equipped with eight MAX-HD microphone preamps, offering +75 dB of gain. This improvement translates into sharper, more detailed recording of vocals and instruments. These preamps ensure minimal noise and exceptional clarity, crucial for capturing richly nuanced performances. Thanks to its advanced design, the Quantum HD 8 promotes sonic purity, making it an outstanding feature for serious studio artists.

Fender Audio Interface for Guitars and Basses
This audio interface takes guitar and bass recording to the next level with inputs developed in partnership with top Fender engineers. This collaboration has resulted in inputs that preserve the natural tone and resonance of your instrument, greatly enhancing recordings and live performances. Whether you're capturing a bass groove or a guitar riff, the quality is incomparable.

The Quantum HD 8's revolutionary Auto Gain function
Leave manual adjustments behind and focus on your performance with the Quantum HD 8's Auto Gain function. At the touch of a button, the interface automatically calculates and sets the optimum gain for your microphones and instruments. This revolutionary function simplifies the task for beginners and experienced users alike, ensuring consistent, high-quality recordings without the slightest hassle.

Make the most of your sound with the Quantum HD 8's reamp outputs
The Quantum HD 8's preamplifier outputs open up a vast realm of sonic exploration. Route audio from your recording software directly to your guitar or bass amp, then re-record to test various amp settings, pedal effects and microphone positions. This feature allows musicians to fine-tune their sound and discover unique tonal combinations, making the Quantum HD 8 an invaluable tool for sound creation.
What our experts say
- High-end converters deliver incredibly accurate sound reproduction, making them the perfect choice for professional recording.
- Despite its advanced features, the Quantum HD8 is surprisingly user-friendly. Installation and configuration are straightforward, allowing you to concentrate on creating music.
- With eight analog inputs and outputs, plus ADAT and S/PDIF I/O options, the Quantum HD8 offers extensive connectivity to meet all your recording needs. It's a versatile tool for any professional studio.
Technical sheet
- DSP No
- USB Audio Interface
- Total inputs: 26
- Total outputs: 30
- Headphone outputs: 2
- Connectivity: USB-C
- Voltage: 220-240V EU
- Phantom power: +48 VDC
- Digital audio bit depth: 32-bit
- Supported sampling rates: 44.1, 48, 88.2, 96, 176.4, 192 kHz
- Digital audio dynamic range: 124 dB
- Inputs
- Instrument inputs: 111 dB (A-Weighted, Minimum Gain)
- Line inputs: 118 dB (A-Weighted, Minimum Gain)
- Microphone preamp: 116 dB (A-Weighted, Minimum Gain)
- Instrument inputs: 20 Hz 20 kHz, +/- 0.1 dB (Unity Gain, 1 kHz Reference)
- Line inputs: 20 Hz 20 kHz, +/- 0.1 dB (Unity Gain, 1 kHz Reference)
- Microphone preamp: 20 Hz 20 kHz, +/- 0.1 dB (Unity Gain, 1 kHz Reference)
- Instrument inputs: 75 dB
- Line inputs: +/- 10 dB
- Microphone preamp: 75 dB
- Instrument inputs: +21 dBu (Unbalanced, Minimum Gain)
- Line inputs: +18 dBu (Balanced, Minimum Gain)
- Microphone preamp: +18 dBu (Balanced, Minimum Gain)
- Line inputs: 0.001% (1 kHz, Minimum Gain)
- Microphone preamp: 0.002% (1 kHz, Minimum Gain)
- Outputs
- Headphone outputs dynamic range: 118 dB (A-Weighted)
- Headphone outputs frequency response: 20 Hz 20 kHz, +/- 0.3 dB (Unity Gain, 1 kHz Reference)
- Headphone outputs impedance operating range: 33 Ohms
- Maximum output of headphone outputs: 11 dBu (50 Ohms)
- Line outputs connection type: Female TRS 1/4 inch
- Main and line outputs dynamic range: 123 dB (A-Weighted)
- Main and line outputs frequency response: 20 Hz to 20 kHz, +/- 0.2 dB (Unity Gain, 1 kHz Reference)
- Maximum level of main and line outputs: +18 dBu (Balanced)
- MIDI inputs/outputs: 5-pin DIN female
- Word Clock input/output: BNC Connector, 4.5 Vpp @ 75Ω Load
- Dimensions
- 44 x 483 x 219 millimeters
- Shipping Weight
- 2.93 kg
- Comes With
- DB-9 breakout cable (for MIDI and S/PDIF inputs/outputs), 1.5-meter USB-C to USB-C cable, IEC power cord