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LYNGDORF TDAI-3400

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The LYNGDORF TDAI-3400 is a reference-level high-end integrated amplifier and audio processor combining Lyngdorf Audio’s advanced True Digital Amplifier technology, powerful 400-watt-per-channel amplification, sophisticated digital signal processing, RoomPerfect™ room correction, high-resolution music streaming, and extensive connectivity.

Delivering 2 x 400 watts RMS into 4 ohms and 2 x 200 watts into 8 ohms, the TDAI-3400 is Lyngdorf Audio’s most powerful integrated amplifier, designed to drive demanding high-end loudspeakers with exceptional control and precision.

Its fully digital amplification architecture eliminates the conventional digital-to-analog conversion stage from the amplification path, while RoomPerfect™ optimizes the interaction between the loudspeakers and listening room. Combined with Roon Ready, Spotify Connect, TIDAL Connect, Qobuz Connect, AirPlay 2, DLNA/UPnP, high-resolution USB audio, and optional HDMI 2.1 and high-end analog modules, the TDAI-3400 can serve as the central component of a sophisticated audiophile stereo or home entertainment system.

TRUE DIGITAL AMPLIFICATION

The TDAI-3400 True Digital Amplifier uses a 100% digital amplification architecture in which the digital signal drives the loudspeakers directly.

Unlike conventional amplification systems that require multiple analog stages after digital conversion, the TDAI-3400 minimizes analog components and signal paths within the amplification process. This helps reduce potential sources of noise, hiss, crosstalk, and distortion.

The result is an amplification platform engineered for high transparency, precise dynamics, and consistent performance across the entire volume range.

The TDAI-3400 delivers:

• 2 x 400W RMS @ 4Ω


• 2 x 200W RMS @ 8Ω


• 40A maximum output current


• ±0.5dB frequency response from 20Hz to 20kHz


• 0.05% maximum THD from 20Hz to 20kHz


• 0.04% THD-N at 1W into both 4Ω and 8Ω

This substantial power and current capability makes the TDAI-3400 suitable for a wide range of demanding high-end loudspeakers.

ROOMPERFECT™ ROOM CORRECTION

RoomPerfect™ is one of the defining technologies of the Lyngdorf TDAI-3400.

Even the finest loudspeakers can be significantly affected by the listening room. Room boundaries, furniture, room dimensions, and acoustic reflections can produce excessive bass, weak bass, uneven frequency response, or compromised imaging and soundstage.

RoomPerfect™ measures the interaction between the loudspeakers and the room and corrects these effects in the digital domain. This allows the TDAI-3400 to optimize the system for the actual listening environment without requiring extensive acoustic treatment.

The system includes a dedicated microphone input, and the RoomPerfect™ microphone, stand, cable, and mini-jack connector are included.

RoomPerfect™ can be configured through the TDAI-3400's interface, web interface, or My Lyngdorf App, making sophisticated room correction accessible without requiring specialist computer-based calibration equipment.

ADVANCED DIGITAL AUDIO PROCESSING

The TDAI-3400 is more than a high-power integrated amplifier. It is also a sophisticated digital audio processor designed to provide extensive control over the final sound.

Its processing platform includes:

• RoomPerfect™ room correction


• Pre-Equalizer


• ICC


• 32 adjustable Voicings


• Up to 8 filters per Voicing


• Adjustable filter gain and Q


• Subsonic filter at 18Hz with 24dB/octave slope


• Digital crossover functionality


• Three individual output settings

The extensive DSP architecture allows the TDAI-3400 to be configured for different loudspeakers, listening environments, system layouts, and personal preferences.

HIGH-RESOLUTION MUSIC STREAMING

The Lyngdorf TDAI-3400 includes a comprehensive built-in media player designed for both local music libraries and online streaming.

Network and streaming capabilities include:

• Roon Ready


• Spotify Connect


• TIDAL Connect


• Qobuz Connect


• Apple AirPlay 2


• Internet Radio


• DLNA / UPnP


• Local file playback through USB


• Bluetooth for remote-control and BLE functions

TIDAL Connect allows compatible music to be controlled directly through the TIDAL application, while the integrated MQA Core Decoder supports MQA playback.

With its extensive streaming platform, the TDAI-3400 can function as a complete high-end digital music hub without requiring a separate network streamer.

HIGH-RESOLUTION USB AUDIO

For computer-based and local digital music playback, the TDAI-3400 provides asynchronous USB connectivity with support for exceptionally high-resolution audio formats.

The USB-B input supports signals up to:

• 384kHz / 32-bit


• DXD


• DSD64


• DSD128

Two USB-A connections are also available for local music storage and compatible USB devices.

This makes the TDAI-3400 particularly suitable for audiophiles maintaining large high-resolution music libraries or using a computer as a dedicated digital source.

EXTENSIVE DIGITAL INPUTS

The TDAI-3400 provides an extensive selection of digital inputs for integrating dedicated digital sources, computers, transports, media players, and other high-end components.

Digital connectivity includes:

• 2 x coaxial digital inputs, up to 192kHz/24-bit


• 1 x AES/EBU digital input, up to 192kHz/24-bit


• 3 x optical digital inputs, up to 96kHz/24-bit


• 1 x USB-B input, up to 384kHz/32-bit, DXD, DSD64 and DSD128


• 2 x USB-A connections


• 1 x coaxial digital output, up to 96kHz/24-bit

The inclusion of AES/EBU, coaxial, optical, and USB connectivity makes the TDAI-3400 suitable for highly resolving digital audio systems with multiple source components.

OPTIONAL HDMI 2.1 MODULE

For systems incorporating a modern television, game console, disc player, or other HDMI source, the optional HDMI 2.1 module expands the TDAI-3400 into a highly capable audio and home entertainment hub.

The module provides:

• 2 x HDMI inputs


• 1 x HDMI output/input


• ARC/eARC


• HDMI CEC integration


• PCM up to 192kHz/24-bit


• HDMI 2.1b support


• HDCP 2.3

The HDMI 2.1 module supports video pass-through up to 8K 50/60Hz and 4K 100/120Hz, allowing the TDAI-3400 to integrate into modern high-resolution home theater and audiovisual systems while maintaining its role as a premium stereo amplifier.

OPTIONAL HIGH-END ANALOG INPUT MODULE

Although the TDAI-3400 is built around a fully digital amplification architecture, Lyngdorf provides an optional High-End Analog Input Module for listeners who want to integrate premium analog sources.

The module adds:

• 1 x MM phono input with RIAA compensation


• 2 x single-ended RCA inputs


• 1 x balanced XLR input

Input sensitivity can be increased by up to 24dB, with the first 6dB of gain handled through gold-plated relays to make effective use of the analog-to-digital converter's available headroom.

This modular approach allows the TDAI-3400 to accommodate high-end vinyl playback and balanced analog sources while retaining its advanced digital processing and amplification platform.

ANALOG AND HEADPHONE OUTPUTS

The TDAI-3400 provides flexible outputs for integration with additional audio components.

Available outputs include:

• 1 x balanced XLR analog output


• 1 x single-ended RCA analog output


• 1 x 3.5mm headphone output


• 1 x coaxial digital output

This flexibility allows the TDAI-3400 to function as the central control and processing component of a sophisticated two-channel system.

DIGITAL CROSSOVER AND SYSTEM CONFIGURATION

The TDAI-3400's digital processing platform allows sophisticated system configuration directly within the amplifier.

Its digital crossover functionality provides three individual output settings, while the extensive Voicing and EQ system allows users to tailor the system for different loudspeaker configurations and listening preferences.

Through the web interface, users can access the TDAI-3400's setup and operational menus, providing detailed control without requiring additional external processors.

MY LYNGDORF APP

The My Lyngdorf App provides convenient control of the TDAI-3400 from a smartphone or tablet.

The app allows users to:

• Select inputs


• Adjust volume


• Configure RoomPerfect™


• Select Voicings


• Browse Internet Radio


• Customize the app layout

The application is available for iOS and Android devices and provides an intuitive way to control the TDAI-3400 without having to access the amplifier directly.

ADVANCED SYSTEM INTEGRATION

The TDAI-3400 is designed to integrate into sophisticated residential and custom-install audio systems.

Connectivity and control options include:

• RJ45 Ethernet LAN


• Wi-Fi 802.11n/ac


• IP control


• RS232 control through DB9


• HDMI CEC through the optional HDMI module


• Infrared/BLE remote control


• Trigger input


• Trigger output


• USB connections


• SD card slot for backup of filters and settings

This extensive control architecture makes the TDAI-3400 suitable for both traditional audiophile systems and professionally integrated high-end installations.

BUILT FOR DEMANDING LOUDSPEAKERS

With 400 watts per channel into 4 ohms and 40A of maximum output current, the TDAI-3400 is designed for demanding loudspeaker loads where amplifier power and current delivery are critical.

Its digital amplification architecture combines high power with precise digital processing, allowing the amplifier to handle complex music signals while maintaining the transparency and control expected from a high-end Lyngdorf system.

PREMIUM HIGH-END AUDIO DESIGN

The TDAI-3400 combines substantial amplification capability with a clean, understated Scandinavian design.

Its matte-black chassis measures 45 x 10.5 x 36 cm, including connectors, and weighs 8.2kg. The amplifier can be installed freestanding or fitted with an optional rack-mount solution.

The minimalist chassis houses an extensive digital processing platform, high-power amplification section, networking hardware, multiple digital and analog connections, and room-correction technology.

A COMPLETE HIGH-END DIGITAL AUDIO SYSTEM

The LYNGDORF TDAI-3400 is designed to be far more than a conventional integrated amplifier. It combines a 400W-per-channel digital amplifier, high-resolution streaming platform, sophisticated audio processor, RoomPerfect™ room correction, digital crossover, extensive DSP, and modular connectivity in a single high-end component.

For audiophiles searching for a high-end integrated amplifier, 400W stereo amplifier, digital streaming amplifier, Roon Ready amplifier, RoomPerfect™ amplifier, or a premium amplifier with HDMI 2.1, USB audio, AES/EBU, XLR and MM phono capability, the TDAI-3400 provides a highly flexible foundation for a reference-quality audio system.

Its combination of powerful amplification, advanced digital signal processing, extensive connectivity, modular upgrades, and Lyngdorf's True Digital Amplifier architecture makes the TDAI-3400 an exceptionally comprehensive solution for high-end two-channel audio.

KEY FEATURES

• High-end 2-channel integrated amplifier and audio processor


• 2 x 400W RMS @ 4Ω


• 2 x 200W RMS @ 8Ω


• 40A maximum output current


• 100% digital True Digital Amplifier technology


• RoomPerfect™ room correction


• Advanced digital audio processing


• Digital crossover with three output settings


• 32 adjustable Voicings


• Pre-Equalizer and ICC


• Subsonic filter at 18Hz


• Roon Ready


• Spotify Connect


• TIDAL Connect with MQA decoding


• Qobuz Connect


• Apple AirPlay 2


• Internet Radio


• DLNA / UPnP


• Local USB music playback


• USB-B high-resolution audio up to 384kHz/32-bit


• DXD, DSD64 and DSD128 support


• AES/EBU digital input


• Coaxial and optical digital inputs


• Optional HDMI 2.1 module


• Optional MM phono and analog input module


• Optional balanced XLR analog input


• Balanced XLR analog output


• Single-ended RCA analog output


• 3.5mm headphone output


• My Lyngdorf App for iOS and Android


• Wi-Fi and Ethernet networking


• IP and RS232 control


• HDMI CEC integration


• Trigger input and output


• IR/BLE remote control


• SD card backup for filters and settings


• Freestanding or optional rack-mount installation


• Matte black finish

TECHNICAL SPECIFICATIONS

SPECIFICATION	LYNGDORF TDAI-3400
TYPE	2-Channel Integrated Amplifier & Audio Processor
POWER OUTPUT	2 x 400W RMS @ 4Ω / 2 x 200W RMS @ 8Ω
MAXIMUM OUTPUT CURRENT	40A
FREQUENCY RESPONSE	±0.5dB, 20Hz–20kHz
THD	0.05% Maximum, 20Hz–20kHz
THD-N	0.04% @ 1W/8Ω and 1W/4Ω
COAXIAL DIGITAL INPUTS	2 x, Up to 192kHz/24-bit
AES/EBU INPUT	1 x, Up to 192kHz/24-bit
OPTICAL DIGITAL INPUTS	3 x, Up to 96kHz/24-bit
USB-B	Up to 384kHz/32-bit, DXD, DSD64, DSD128
USB-A	2 x
ANALOG INPUTS	2 x Single-Ended RCA
OPTIONAL ANALOG MODULE	MM Phono, 2 x RCA, 1 x Balanced XLR
OPTIONAL HDMI MODULE	2 x HDMI Inputs, 1 x HDMI Output/Input, ARC/eARC
DIGITAL OUTPUT	1 x Coaxial
ANALOG OUTPUTS	1 x RCA, 1 x Balanced XLR
HEADPHONE OUTPUT	1 x 3.5mm
ROOM CORRECTION	RoomPerfect™
DIGITAL PROCESSING	Pre-Equalizer, ICC, Voicings, Digital Crossover
VOICINGS	32, Up to 8 Filters Each
STREAMING	Roon Ready, Spotify Connect, TIDAL Connect, Qobuz Connect, AirPlay 2
NETWORK PLAYBACK	DLNA / UPnP, Internet Radio, Local USB Playback
WIRELESS	Wi-Fi 802.11n/ac, Bluetooth/BLE
CONTROL	My Lyngdorf App, Web Interface, IP, RS232, IR/BLE
NETWORK	RJ45 Ethernet
HDMI	Optional HDMI 2.1b, eARC/ARC, CEC, HDCP 2.3
STANDBY POWER	<0.5W
DIMENSIONS	45 x 10.5 x 36cm / 17.7 x 4.1 x 14.1in
WEIGHT	8.2kg / 18.1lb
FINISH	Matte Black