92%
Lyngdorf Audio MXA-8400
A new benchmark in multichannel amplifiers
The MXA-8400 is the most powerful product from Lyngdorf Audio ever, delivering 8 x 400 watts of ultra-linear and stable power. It incorporates Purifi EIGENTAKT technology with the innovative EIGENTAKT ErrorCorrection (EEC), Lyngdorf Audio’s highly efficient and advanced power supply PowerPerfect, ultra-low-noise and precise analog input stages, and a 4-layer main PCB optimized for the best signal purity and grounding. With this range of features, the MXA-8400 sets new amplifier benchmarks in audio quality, measured performance, and reliability.
Purifi EIGENTAKT technology with innovative EEC circuit
Purifi EIGENTAKT technology is the result of extensive research addressing persistent challenges in Class D amplifiers. The patented EIGENTAKT ErrorCorrection (EEC) ensures ultra-high, full-output loop gain (>75dB) in the entire audio band. This produces extremely low Total Harmonic Distortion (THD) at any frequency and any power level, as well as unrivaled low Inter Modulation Distortion (IMD), leading to a highly resolved and stable stereo image unmatched by any amplifier technology or operating class. The result is an incredibly neutral sound performance, with negligible audible noise and no sonic fingerprint.
Highly efficient PowerPerfect power supply
8 Purifi amplifiers with a combined 3.2 kilowatts of output power and even higher peak power represent extremely high challenges for the power supply, which is often a limiting factor with common multichannel amplifiers. PowerPerfect by Lyngdorf Audio is a highly efficient and advanced power supply. With its integrated Channel Balancing Technology and several protection systems, it provides the best basis for each channel, even with all channels driven. It is so power-efficient and has such a low idle power consumption that the enclosure sufficiently becomes the heatsink, with no noisy fans required. The mains power is decoupled by design, requiring no external power conditioner. It safeguards the speakers from mains-generated noise, represents a gentle load to the mains, and does not introduce noise to other equipment.
Best-in-class performance across all levels, frequencies, and speaker loads
Thanks to Purifi EIGENTAKT combined with PowerPerfect, the performance of the MXA-8400 is maintained across all volume levels and the entire audio frequency range. Even when operating over its maximum specifications, clipping in the output stage will be recovered in both voltage and current domains. It is immune to out-of-band noise on the input signal and insensitive to difficult speaker loads, always maintaining a flat frequency response. The output channels are bridgeable, delivering up to 4 x 800 watt to drive even the most demanding loudspeakers effortlessly.
Designed, assembled, and 24h tested at Lyngdorf Audio, Denmark
The MXA-8400 is assembled to the highest quality standards at Lyngdorf Audio in Denmark, where each unit must pass a 24-hour test with all channels driven and must be measured to meet all specifications. This ensures the ultimate performance and highest reliability.
Purifi EIGENTAKT technology
Purifi EIGENTAKT is the result of extensive research, leading to the patented EIGENTAKT ErrorCorrection (EEC) with ultra-high, full-output loop gain. It produces negligible Total Harmonic Distortion and Inter Modulation Distortion, minimized Magnetic Hysteresis Distortion, low Electro Magnetic Interference, a frequency response independent from the speaker impedance, and a very high damping factor.
PowerPerfect power supply
PowerPerfect is an advanced power supply, specifically designed to extract the best performance from Purifi technology and to create a very robust and reliable power amplifier. It is also a highly power-efficient design with extraordinarily low idle power consumption, while several protection systems continuously measure the processed power over time. The integrated Channel Balancing Technology distributes the power between all channel in the best way.
Bridgeable amplifier outputs
The 8 power amplifier channels are bridgeable in pairs, delivering up to 4 x 800 watts at 8 Ohm to drive even the most demanding loudspeakers effortlessly. The maximum output voltage doubles from 60V to 120V in bridge mode.
Dealers selling Lyngdorf Audio near you
Lyngdorf Audio MXA-8400 — Powerful, neutral multichannel amp
The Lyngdorf MXA-8400 is an eight-channel workhorse that pairs Purifi Eigentakt modules with Lyngdorf’s PowerPerfect supply to deliver clinical neutrality, prodigious headroom and tight, articulated bass. Reviewers led by Roger Kanno and Best of High End found its dynamics and control—up to 8 x 400 W (4 Ω) or bridged 4 x 800 W—ideal for demanding stereo or immersive setups. Imaging is expansive and precise, making vocals and percussion sit convincingly in space, while the ultra-low distortion numbers support a transparent midrange and detailed highs. The chassis is thermally efficient and built for serious systems; connectivity favors pro-style workflows (XLR in, Neutrik speakON out). It’s best for audiophiles and home-theater owners who need uniform multichannel power and reference-level neutrality rather than consumer-style I/O. Overall, reviewers conclude it’s a technically superb, high-headroom amplifier that rewards careful system matching.
Pros
- Exceptionally strong dynamics and headroom that drive demanding speakers without strain, supporting bridged and 2-channel modes.
- Ultra-low distortion and highly neutral, transparent presentation thanks to Purifi Eigentakt modules—excellent timbral accuracy and low noise.
- Wide, holographic soundstage and precise channel integration—strong multichannel coherence for immersive music and home theater.
- Robust engineering and thermal design (PowerPerfect supply, chassis-as-heatsink) deliver quiet operation and consistent channel balance across eight outputs.
&
Cons
- Consumer-friendly connectivity is limited—only balanced XLR inputs and Neutrik speakON outputs, which may require adapters or re-terminated cables.
- Short two-year warranty compared with expectations for a product in this segment.
- Premium pricing may deter buyers who compare multichannel options—excellent value within its class but a significant investment.
Sound Quality
94/100
Dynamics
95/100
Reviewers repeatedly describe the MXA-8400 as powerful, effortless and authoritative (3.2 kW total, 8 x 400 W into 4 Ω, bridge to 4 x 800 W), with very high damping (>1200) and excellent current capability (25 A). SoundStage and Best of High End both note the amp’s slam, immediate texture and ability to drive demanding speakers (ML ESLs, Anthems) without losing control—evidence it delivers exceptional headroom and transient control.
Soundstage Imaging
91/100
Multiple reviewers praise the MXA-8400’s expansive, holographic soundstage and precise imaging (voices and percussion placed with striking clarity). SoundStage reviewers specifically note outstanding channel separation and 3‑D imaging, though one note mentioned slight loss in image sharpness/depth in certain bridged cases, so excellent but not absolutely flawless.
Show Less
Build Quality
90/100
Construction and engineering receive high marks: Purifi Eigentakt modules, Lyngdorf’s PowerPerfect supply, 4-layer PCB, quiet chassis-as-heatsink design and solid SpeakOn/XLR connectors. The only build-related criticism was the relatively short two-year warranty; otherwise the amp is described as well-made and thermally efficient (no noisy fans).
Value for Money
90/100
At about €9,000 (reviews) the MXA-8400 is pricey but reviewers frame it as competitively priced among comparable multichannel amps (Bryston, Hegel, McIntosh) and justify the premium given its power (8x400W/4x800W bridged), measured performance and feature set. SoundStage warned some buyers may balk at the price, but overall the consensus is that the performance justifies the cost.
Reviews
Online Reviews & Mentions
Forum Mentions
No forum mentions found yet
FAST, EASY & NEAR
Find Lyngdorf Audio Verified Dealers Near You
Lyngdorf Audio dealers in the map