Lyngdorf TDAI-34002020-06-24T11:48:51+00:00



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.

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 RoomPerfectTM 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.

Connect audio and video sources

A variety of inputs and outputs provide plenty of options to connect your audio and video sources as well as your speaker setup – such as 7 digital inputs including a balanced AES/EBU, USB inputs connects to music stored external, 2 analog inputs for simple analog music sources and optional modules.

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 connects to streaming services like Roon Ready, Spotify Connect, and Airplay as well as internet radio.

Control the TDAI-3400 with an app

The Lyngdorf Remote Application automatically discovers the TDAI-3400 connected to your local network, and you will be able to adjust all the basic functions like input selection and volume level from your handheld device. The built-in media player can be controlled directly, and you can access music files stored on pen drives connected to the Lyngdorf TDAI-3400 as well as search all files stored on your local hard drives. Swiping left and right gives you access to cover art as well as informing you of the signal resolution.

The Lyngdorf Remote Application is available for free download from both IOS and Android.

TDAI-3400 technical drawings


Description: 2-channel integrated amplifier and audio processor
Power handling: 2×400 W RMS @ 4Ohm / 2x200W RMS @ 8Ohm
Max output current: 40A
Audio specifications: 
Frequency Response: ±0,5dB from 20 to 20,000 Hz, Total Harmonic Distortion: 0.05% max from 20 to 20,000 Hz, THD-N 1w/8ohm 0,04% / THD-N 1w/4ohm 0,04%
Digital inputs (asynchronous):
1 x AES-EBU (≤192kHz/24bit), 2 x Coaxial (≤192kHz/24bit), 3 x Optical (≤96 kHz/24bit), 1 x USB B (≤384kHz/32bit, ≤DSD128, DXD)
Analog inputs: 2 x Analog Single Ended RCA (Max level: 4.0V = 0dBFS), 1 x Microphone input for RoomPerfect™ calibration
HDMI module (optional in-/output): 1 x HDMI Output / 3 x HDMI Inputs (PCM ≤192kHz/24bit), ARC (PCM ≤192 kHz/24bit), CEC integration, HDMI 2.0a support, HDCP 2.2, Resolutions requiring 600 MHz clock supported
High-end analog input module: 1 x RIAA MM, 2 x single ended RCA, 1 x balanced XLR
Digital outputs: 1 x coaxial digital (96kHz / 24 bit)
Analog outputs: 1 x analog single ended RCA, 1 x analog balanced XLR, 1 x headphone output 3.5mm Jack
RoomPerfect™, Pre-Equalizer, ICC, 32 x adjustable voicings holding ≤8 filters with adjustable gain and Q 
: Roon Ready, Spotify Connect, DLNA Support (uPnP/see DLNA formats) Airplay, Local file playback (USB), Internet Radio (vTuner)
Wireless connections: Bluetooth (4.2 BLE), Wi-Fi (802.11 n/ac)
Interfaces: Web-interface, IP Control, 1 x DB9 connector for RS232 control, 1 x RJ45 Ethernet LAN connector, 2 x USB connectors (Type A) , SD card slot (Backup of filters and settings)
Accessories included: RoomPerfect™ Microphone, Microphone stand, cable & mini-jack connector, Remote control (IR / BLE)
Placement options: Optional rack mount or freestanding
Dimensions (Wx H x D): 45 x 10.5 x 36 cm (including connectors) / 17.7 x 4.1 x 14.1 inches
Weight: 8.2 kg / 18.1 lb
Finish: Matte black

TDAI-3440 award

The Nordic magazine, Lyd og Billede, has awarded Lyngdorf TDAI-3400
as The Best Amplifier of The Year 2019 in the High End category.


Reviewers’ choice for TDAI-3400

Reviewers' choice for TDAI-3400 Roger Kenno from SoundStage has made a great review of the TDAI-3400 amplifier. Below you can read quotes from the review and find a link to the whole review. Overall, I was extremely impressed by the integration of a comprehensive set of features into a well-executed, relatively user-friendly product that functioned without bug or fault throughout the evaluation period. I think I [...]

Great Israeli review of TDAI-3400

Great Israeli review of TDAI-3400 One of the leading HiFi websites in Israel, DTown, has reviewed Lyngdorf TDAI-3400. The review is Hebrew, but we have translated a couple of the quotes and the conclusion below. The TDAI-3400 room correction system, RoomPerfect, is one of the worlds most rewarded and sophisticated room correction systems. It guarantees bringing your loudspeakers performances to the maximum, while also perfectly integrating [...]

Review of TDAI-3400

Review of TDAI-3400 Michael Lang from has made a review of the Lyngdorf TDAI-3400 integrated amplifier. In his verdict he writes:A marvel of modern technology. As an integrated amplifier, it sounds brilliant, but is also extensively equipped and can be expanded with an excellent converter as well as high-quality analogue and HDMI boards. Very good workmanship; turning the volume control, for example, is a delight.Read the whole [...]

Best Buy for TDAI-3400

Best Buy for TDAI-3400 Dominique Mafrand from the French magazine Haute Fidelite has reviewed the TDAI-3400 amplifier and awarded the product "Meilleur achat"/Best Buy. The review is in French, but you can read the conclusion in English below. “It was during our test bench on the TDAI-2170 that we discovered and appreciated the Danish brand, on the one hand, and the advantages of its patented concept [...]

Five stars for Lyngdorf TDAI-3400

Five stars for TDAI-3400 Chris Kelly from the online site "The Ear" has made a great review of Lyngdorf TDAI-3400. Below you can read a small excerpt from the review. At the bottom you can find a link to the whole review.By now, you will probably have realised that I was absolutely blown away by the TDAI 3400. It is an absolute stand-out product in every way. If [...]


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