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Lyngdorf Audio TDAI-3400
With extreme audio processing options combined with the most powerful and advanced digital amplifier technology, the TDAI-3400 is the most powerful product from Lyngdorf Audio yet marketed.
True digital amplification
The TDAI-3400 amplification is 100% digital, without sound-deteriorating digital-to-analog conversion. The digital signal drives the speakers directly. This unique and technically demanding solution eliminates several analog components and signal paths, which are a major source of noise, hiss, crosstalk, and distortion in conventional amplifiers. TDAI amplifiers offer the best sound quality at all volume levels and will deliver the most enjoyable and uncolored sound you have ever experienced.
Connect audio and video sources
A variety of inputs and outputs provide plenty of options to connect your audio and video sources: Seven digital inputs including optical, coax, AES/EBU, USB-B, USB-A, two RCA analog inputs for analog music sources, one optional analog module for more analog inputs including XLR and phono MM, and one optional HDMI 2.1 module with two inputs and one ARC / eARC output.
Built-in media player
The TDAI-3400 accepts all media interfaces and features a built-in media player with the highest playback quality. Through your local network or via the USB connectors, you can access your entire library of music through the DLNA/UPnP enabled player. This media player also allows music streaming using Roon Ready, Spotify Connect, Qobuz Connect, and AirPlay 2 as well as internet radio. The TDAI-3400 also supports TIDAL Connect which allows lossless audio quality with the TIDAL app as the controller, and it includes the MQA Core Decoder, which unfolds the MQA file once to deliver better than CD-quality. MQA (Master Quality Authenticated) is an award-winning British technology that delivers the sound of the original master recording.
Tailor your setup and sound
Through the web interface you can perform all setup and operations from the menu system, which allows you to tailor your setup and sound, and the digital crossover allows 3 individual output settings. With our proprietary RoomPerfect™ room-correction software to eliminate the negative influence of the listening room, the TDAI-3400 delivers a perfect sound without the need for extensive room treatment.
Control the TDAI-3400 with an app
The My Lyngdorf App gives you full control of your TDAI-3400 from your phone or tablet. Adjust inputs, volume, RoomPerfect settings, and Voicings with an intuitive, icon-based interface. You can even personalize the app layout and explore internet radio with smart search filters.
Available for free on iOS and Android.
Learn more about the app →
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Lyngdorf Audio TDAI-3400
The Lyngdorf Audio TDAI-3400 is a powerful, feature-packed integrated amplifier and processor that combines high-current digital amplification with Lyngdorf’s acclaimed RoomPerfect room correction. It delivers taut, articulate bass, luminous midrange and smooth treble, producing a wide, holographic soundstage that reviewers found expansive and well-focused. Reviewers including Roger Kanno of SoundStage Solo and The Ear highlighted its effortless dynamics, speaker control and seamless sub integration. With 200W/8Ω (400W/4Ω), high-resolution USB/DSD, Roon/TIDAL/Qobuz support and web/IP control, the TDAI-3400 doubles as a modern streamer and processor. The chassis is solidly built with a clear display and comprehensive setup options. Ideal for two-channel audiophiles who want one-box performance with advanced room correction, it pairs precise DSP with muscular power and broad connectivity.
Pros
- Industry-leading room correction (RoomPerfect) that consistently tightens bass, expands depth and improves imaging across speakers and rooms.
- High-current digital amplification with authoritative control and dynamics — specified at 200W/8Ω (400W/4Ω) and praised for driving demanding speakers cleanly at high levels.
- Comprehensive connectivity and streaming: high-res USB/DSD support, Roon Ready, TIDAL/Qobuz, Spotify Connect, AirPlay2 and web/IP control — making it a true all-in-one two-channel solution.
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Cons
- Headphone output is serviceable but lacks the drive and bass weight of dedicated headphone amplifiers/sources.
- Relatively short two-year warranty and limited dealer availability in some markets may be a consideration for buyers seeking long-term support.
Sound Quality
92/100
Dynamics
91/100
Reviewers praised its control and power delivery (200W/8Ω, 400W/4Ω) with statements like 'no hardening of the sound' and 'control ... nearly on a par with my reference rig' (SoundStage Solo; The Ear). Given its high-power switching/rapid MOSFET topology and reviewers' comments about effortlessness and maintained headroom, dynamics are excellent for its class.
Soundstage Imaging
93/100
Reports consistently highlight a large, holographic, well-focused soundstage made even more three-dimensional by RoomPerfect (SoundStage Solo: 'holographic'; The Ear: 'image became larger yet remained focused'). Imaging depth, width and stable placement were repeatedly praised across speakers and listening material.
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Build Quality
90/100
Reviewers call the unit 'solidly built' and Lyngdorf publishes robust power/current specs (40A max, 200Wpc into 8Ω) and substantial heat dissipation, supporting good thermal and electrical design. The chassis and component choices are presented as high quality; no major mechanical or reliability concerns were reported.
Features Connectivity
95/100
Very fully featured: high-resolution USB (up to 384kHz/32-bit, DSD), multiple digital inputs (coax, AES, optical), network streaming (Roon Ready, TIDAL Connect, Qobuz, Spotify, AirPlay2), RoomPerfect room correction, headphone out, web/IP control, and optional phono/XLR and HDMI 2.1 modules. The combination of a high-quality built-in DAC, extensive digital/streaming support and advanced room correction places it at the top end of the features band.
Value for Money
90/100
Reviewers note the TDAI-3400's performance/feature set compares very favorably to much more expensive two-box systems (example: better value vs an Anthem preamp+monoblocks combo), and explicitly cite its aggressive value at the stated price. While not called a bargain, reviewers characterize the unit as a justified premium purchase that delivers level-for-level performance.
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