NAD · C 399
Ready to buy
The retained reference is $2,899 current U.S. direct price. Direct availability can change and the base chassis must not inherit BluOS, Wi-Fi or working Dirac functions from an optional MDC2 card shown in system material. Download the exact manual, map every source and output, verify loudspeaker load and ventilation and test the complete installed system during the return period.
Current market
Each line carries its own check date because price, software, specifications, and product cycle do not age at the same speed.
Direct availability can change and the base chassis must not inherit BluOS, Wi-Fi or working Dirac functions from an optional MDC2 card shown in system material. Confirm authorized new stock, exact finish, tax, shipping, return terms and checkout package before paying.
C 399 is defended for buyers needing strong continuous power and future module options when the base-versus-MDC2 purchase boundary and Dirac or BluOS licenses are documented exactly.
Other paths
These are not generic competitors. Each one represents a different way to buy into the same market.
Hegel
Anthem
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.
C 399 was checked against exact identity, current U.S. price, manual, support, topology, load, source paths, phono, outputs, controls, power, heat, 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 mdc2 card identity, bluos updates, dirac license, hdmi earc, subwoofer routing, fan or heat behavior and service rather than a universal sound-quality or reliability result.
These are self-selected reports from different production runs, speakers, impedances, rooms, sources, cartridges, network services, firmware, mains conditions, listening levels and service regions. They identify acceptance tests and ownership questions and do not establish sound-quality, compatibility, defect, failure, tube-life, software-life or safety rates.Self-selected owners discuss loudspeaker matching, load behavior, heat, hum, phono gain, digital and network setup, firmware, controls, reliability and service. Reports span different speakers, rooms, sources, power conditions, listening levels, software versions and regions, so they identify acceptance tests rather than sound-quality or failure rates.
Require a componentized invoice and screenshot the active module and license state before assigning any network or room-correction capability to the base chassis.
1 evidence recordSources
The page separates what a source states directly from what we conclude across sources.
NAD identifies C 399 as the current complete two-channel integrated amplifier described here.
$2,899 current U.S. direct price was retained for the exact current U.S. system with package, finish, stock and promotion qualifications visible.
The exact manual defines power-rating basis, supported speaker load, wiring, source paths, ventilation, operation, safety and service boundaries for C 399.
NAD retains current manuals, warranty, firmware or regional service material for the exact amplifier.
Independent exact-model listening and technical coverage examines amplification, source paths, loudspeaker matching, controls, heat and ownership. Results remain tied to the reviewed sample, speakers, room, sources, setup and listening level and do not guarantee sound quality, load compatibility, reliability or service life.
Self-selected owners discuss loudspeaker matching, load behavior, heat, hum, phono gain, digital and network setup, firmware, controls, reliability and service. Reports span different speakers, rooms, sources, power conditions, listening levels, software versions and regions, so they identify acceptance tests rather than sound-quality or failure rates.
Noise exposure depends on sound level and duration. Amplifier power and headphone-output capability are not safe listening levels, so installation requires conservative level and exposure control.
H190v is a current defended alternative in the high-current Class AB network amplifier without Wi-Fi or HDMI branch.
STR Integrated Amplifier is a current defended alternative in the high-power room-corrected integrated with dual-subwoofer control branch.
Manufacturer identity, exact current U.S. price, manual, support, independent exact-model evidence and bounded owner reports were checked on August 20, 2026. This desk covers current U.S.-supported complete two-channel integrated amplifiers for serious home listening, including selected network-streaming systems. It excludes AV receivers, power amplifiers, preamplifiers, active-speaker systems, discontinued or used-only units, cosmetic editions and DAC-only or headphone-only products. Preserve topology, continuous power test basis, minimum and combined speaker load, current delivery, protection, analogue and digital inputs, network and television path, phono gain and loading, headphone and subwoofer behavior, room correction, firmware, app and service dependence, account, license and privacy, power, heat, ventilation, hearing and electrical safety. No topology, wattage, load claim, DAC, streamer, room correction, phono stage, review, owner report, warranty or service plan guarantees sound quality, loudspeaker compatibility, safe level, reliability, uptime, software continuity, resale or any listening, health or commercial outcome.
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