PreSonus · Quantum HD 8
Ready to buy
The retained reference is $791.99 current promotional U.S. retail price. This limited retailer promotion can end; do not substitute the older Thunderbolt Quantum, HD 2 or an expansion bundle, and the included Studio One term is not lifetime hardware support. Download the current manual and driver, map every physical and digital channel at the intended sample rate and test return and support terms.
Current market
Each line carries its own check date because price, software, specifications, and product cycle do not age at the same speed.
This limited retailer promotion can end; do not substitute the older Thunderbolt Quantum, HD 2 or an expansion bundle, and the included Studio One term is not lifetime hardware support. Confirm authorized new stock, tax, shipping, return terms and exact software edition before paying.
Quantum HD 8 is defended for high-input USB sessions needing 75 dB recallable preamps and re-amp outputs when its Universal Control workflow and non-Thunderbolt latency boundary fit.
Other paths
These are not generic competitors. Each one represents a different way to buy into the same market.
Focusrite
Universal Audio
What changed
Older observations stay in the ledger when the current view changes. That lets a buyer tell the difference between an old complaint, an active issue, and a problem that was corrected.
Quantum HD 8 was checked against exact identity, current U.S. price, manual, support, host and driver, physical and digital I/O, preamps, monitoring, DSP, power, software, service, safety, independent evidence and bounded owner reports.
Each amount stays tied to its source and capture date. Conflicting prices remain visible until the seller resolves them.
Current reference priceA structured timeline will begin with the next source capture
Owner experience
Owner discussion returns to universal control, usb latency, auto gain, optical routing, re-amp level, firmware and studio one entitlement rather than a universal sound-quality or reliability result.
These are self-selected reports from different hardware revisions, computers, ports, hubs, operating systems, drivers, buffers, sample rates, DAWs, plug-ins, firmware, clocks, cables, microphones, monitors, power conditions and service regions. They identify acceptance tests and ownership questions and do not establish sound quality, latency, compatibility, uptime, defect, data-loss or safety rates.Self-selected owners discuss drivers, operating systems, buffers, latency, preamps, phantom power, clocking, routing, firmware, noise, power and service. Reports span different computers, cables, software versions and studio conditions, so they identify acceptance tests rather than sound-quality or reliability rates.
Benchmark the current USB driver and save a fully tested scene before valuing the Quantum name or recalled gain as session continuity.
1 evidence recordSources
The page separates what a source states directly from what we conclude across sources.
PreSonus identifies Quantum HD 8 as the current eight-preamp USB rack with recall and re-amping system described here.
$791.99 current promotional U.S. retail price was retained for the exact interface with configuration and package qualifications visible.
The current manual defines host connection, physical and simultaneous I/O, input modes, phantom power, clocking, power, routing and safety boundaries for Quantum HD 8.
PreSonus retains downloads, compatibility guidance and a regional support path for the exact model.
Independent product-specific testing examines connection, conversion, I/O, monitoring, software and workflow behavior. Measurements and review impressions remain tied to the tested host, driver, buffer, sample rate and unit and do not guarantee sound quality, latency or reliability.
Self-selected owners discuss drivers, operating systems, buffers, latency, preamps, phantom power, clocking, routing, firmware, noise, power and service. Reports span different computers, cables, software versions and studio conditions, so they identify acceptance tests rather than sound-quality or reliability rates.
Noise exposure depends on sound level and duration. A headphone or monitor output capability is not a safe operating level, and monitoring requires conservative level and exposure control.
Scarlett 18i20 4th Generation is a current defended alternative in the expandable eight-preamp project-studio rack branch.
Apollo x8p Gen 2 is a current defended alternative in the premium eight-preamp Thunderbolt DSP rack branch.
Manufacturer identity, exact current U.S. price, manual, driver or firmware support, independent professional evidence and bounded exact-model owner reports were checked on August 19, 2026. This desk covers complete current U.S.-supported desktop and rack computer audio interfaces with integrated host connection and conversion for recording, production and post. It excludes standalone mixers or recorders already covered, preamps and converters without a host-interface path, monitor controllers, expansion-only boxes, unsupported imports, obsolete models, cosmetic duplicates and padded bundles. Preserve connector protocol rather than connector shape, supported operating systems and drivers, class compliance, buffer and latency test basis, physical versus advertised and simultaneous I/O, sample-rate-dependent digital counts, mic preamps, gain, phantom, line and instrument modes, headroom, digital format, clock master and termination, monitor and cue routing, DSP and plug-in capacity, software entitlement, bus or external power, form factor, cable and rack requirements, firmware, accounts, privacy, warranty, service and recovery. Use conservative headphone and monitor levels, grounded intact power equipment, dry stable placement and competent wiring. No specification, converter, preamp, clock, driver, buffer, DSP, review, owner report, warranty or service plan guarantees sound quality, latency, compatibility, data integrity, uptime, hearing safety, electrical safety, client approval, productivity or any recording, production, commercial, health or safety outcome.
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