PreSonus Quantum HD 8 USB-C Audio Interface

PreSonus | SKU: 2777706502

Product Highlights

MAX-HD Mic Preamps
32-bit/192 kHz Resolution
USB-C Connectivity
Auto Gain Function
Illuminated Push Encoder
Dual Headphone Outputs
ADAT Optical I/O
Word Clock I/O
MIDI I/O via DB9 Connector (breakout cable required).

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£715.00 £869.00

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Description

PreSonus Quantum HD 8 — Professional-Grade Audio Interface for Studio Environments

The PreSonus Quantum HD 8 is a 26-in/30-out USB-C audio interface designed for professional studios and demanding recording setups. It features eight next-generation MAX-HD mic preamps, 32-bit/192 kHz conversion, and extensive I/O options, making it ideal for multi-mic recording sessions, hybrid analog/digital workflows, and high-fidelity production.

Modern Power for Contemporary Producers

The PreSonus Quantum HD 8 sets a new benchmark for studio audio interfaces, combining precision-engineered hardware with advanced digital control in a powerful 1U rackmount form. Designed to meet the demands of modern producers, engineers, and hybrid studios, the Quantum HD 8 delivers pristine 32-bit float recording, transparent preamplification, and seamless integration into any setup via USB-C.

Auto Gain Function for Streamlined Setup

Equipped with eight all-new MAX-HD mic preamps, each offering up to 75 dB of gain and ultra-low noise performance, this interface is tailor-made for handling everything from delicate vocals to dynamic drum sessions. The Auto Gain function takes the guesswork out of gain staging, while the illuminated push encoder offers immediate hands-on control of input and output levels.

Versatile and Powerful

With 26 inputs and 30 outputs, including ADAT optical I/O, S/PDIF, dual headphone outputs, MIDI I/O, and Word Clock connectivity, the Quantum HD 8 is perfectly suited for complex routing, reamping, and multi-microphone workflows. Its professional feature set is backed by high-resolution 32-bit/192 kHz conversion, delivering studio-grade clarity and dynamic range for every recording.

KEY FEATURES: PreSonus Quantum HD 8 USB-C Audio Interface

MAX-HD Mic Preamps – Eight ultra-clean preamps with up to +75 dB of gain, providing transparency and low noise for a wide range of microphones.
32-bit/192 kHz Resolution – Ensures ultra-high-definition recording and mixing.
USB-C Connectivity – Provides fast, reliable connection with compatible devices.
Auto Gain Function – Automatically sets optimal gain levels for inputs, streamlining the recording process.
Illuminated Push Encoder – Offers intuitive control over gain and output volume.
Dual Headphone Outputs – Two independent 1/4" stereo headphone outputs for versatile monitoring.
ADAT Optical I/O – Two optical inputs and outputs for expanding your setup with additional digital gear.
Word Clock I/O – Ensures synchronization with other digital audio equipment.
MIDI I/O via DB9 Connector – Provides MIDI input and output using a DB9 connector (breakout cable required).

Specification

ANALOG INPUTS
Microphone Inputs (CH 1–8)

Connector Type: 8x Combo-style XLR / TRS
Max Input Level: +18 dBu (balanced, minimum gain)
Gain Range: 0 dB to +75 dB
Frequency Response: 20 Hz to 20 kHz, ±0.1 dB (unity gain, reference 1 kHz)
Dynamic Range: 116 dB (A-weighted, minimum gain)
THD+N: 0.002% (1 kHz, minimum gain)
EIN: –130 dBu (max gain, 150 Ohms, 20 kHz BW, A-weighted)
Input Impedance: 1600 Ohms

Line Inputs (CH 1–8)

Connector Type: 8x Combo-style XLR / TRS
Max Input Level: +18 dBu (balanced, minimum gain)
Frequency Response: 20 Hz to 20 kHz, ±0.1 dB (unity gain, reference 1 kHz)
Dynamic Range: 118 dB (A-weighted, minimum gain)
THD+N: 0.001% (1 kHz, minimum gain)
Input Impedance: 10 kOhms
Digital Trim: –10 dB to +10 dB

Instrument Inputs (CH 1–2)

Connector Type: 2x ¼-inch TS
Gain Range: –7 dB to +68 dB
Max Input Level: +21 dBu (unbalanced, minimum gain)
Frequency Response: 20 Hz to 20 kHz, ±0.1 dB (unity gain, reference 1 kHz)
Dynamic Range: 111 dB (A-weighted, minimum gain)
THD+N: 0.003% (1 kHz, minimum gain)
Input Impedance: 1 MOhm

ANALOG OUTPUT

Main Outputs (CH 1–2)

Connector Type: 2x ¼-inch TRS
Max Output Level: +18 dBu (balanced)
Frequency Response: 20 Hz to 20 kHz, ±0.2 dB (unity gain, reference 1 kHz)
Dynamic Range: 123 dB (A-weighted)
THD+N: 0.001% (1 kHz @ +4 dBu)
Output Impedance: 51 Ohms
Trim Range: –∞ dB to 0 dB

Line Outputs (CH 3–10)

Connector Type: 8x ¼-inch TRS
Max Output Level: +18 dBu (balanced)
Frequency Response: 20 Hz to 20 kHz, ±0.2 dB (unity gain, reference 1 kHz)
Dynamic Range: 123 dB (A-weighted)
THD+N: 0.001% (1 kHz @ +4 dBu)
Output Impedance: 51 Ohms
Trim Range: –∞ dB to 0 dB

Re-amp Outputs (CH 11–12)

Connector Type: 2x ¼-inch TRS
Max Output Level: +4 dBu (balanced)
Frequency Response: 20 Hz to 20 kHz, ±0.3 dB (unity gain, reference 1 kHz)
Dynamic Range: 117 dB (A-weighted)
THD+N: 0.001% (1 kHz @ +4 dBu)
Output Impedance: 100 Ohms
Trim Range: –∞ dB to 0 dB

Headphone Outputs (1–2)

Connector Type: 2x ¼-inch TRS Stereo
Max Output Level: +11 dBu (50 Ohms load)
Frequency Response: 20 Hz to 20 kHz, ±0.3 dB (unity gain, reference 1 kHz)
Dynamic Range: 118 dB (A-weighted)
THD+N: 0.001% (1 kHz)
Output Impedance: 33 Ohms
Trim Range: –∞ dB to 0 dB

Digital I/O
S/PDIF I/O
Connector Type: 2x RCA (1 in, 1 out)
Supported Sample Rates: 44.1 / 48 / 88.2 / 96 kHz

ADAT Optical I/O
Connector Type: 2x TOSLINK (2 in, 2 out)
Format: ADAT Digital Lightpipe with S/MUX II
Channel Support: 16 channels @ 44.1/48 kHz, 8 channels @ 88.2/96 kHz

Word Clock I/O
Standard: AES-11 2009 Annex B
Connector Type: BNC
Jitter Performance: < 0.025 UI (compliant with AES 3-4-2009)
MIDI I/O: 2x 5-pin DIN (via DB-9 breakout cable)
Sync Sources: Internal, Word Clock, ADAT, S/PDIF

Power Requirements
Connector Type: IEC 3-conductor receptacle
Power Input: 100–240V AC, 50/60 Hz
Power Supply: Internal, universal

Mechanical
Dimensions (W x D x H): 483 mm x 219 mm x 44 mm
Weight: 2.86 kg
Rack Size: 1U

Warranty

2-year warranty

What's in the box?

PreSonus Quantum HD 8 Audio Interface
1m USB-C to USB-C Cable
IEC Power Supply
Quick Start Guide
Safety and Compliance Guide

Downloads & Manuals

PreSonus Quantum HD-Series (HD2, HD4) - User Manual

Need help? Call us on: 02476 36 98 97

We are more than online retailers, our sales staff have a passion for making music and give honest, frank feedback on their experience with your chosen product.

OPEN: Mon to Fri - 9am to 5pm (Closed Sat/Sun)