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PLEASE CHECK AVAILABILITY BEFORE CONFIRMING YOUR PURCHASE! Our stock can change any minute – we sell through various sales channels.Brand New! – Closed BoxWe are authorised dealers of the finest audio gear and musical instruments.Note 1: Free shipping within EU. Shipping price to any other country is an estimate. Please message us before placing your order for specific shipping price to your particular location.Note 2: This product is custom ordered. Please, message us to check availability and/or eventual delay for shipping. Note 3: We sell without taxes anywhere outside Europe and to valid VAT ID companies inside Europe. Please ask us your price without Tax in those cases.Note 4: We can quote any kind of bundle with our products at the most convenient prices. Just visit our store and ask for it.LYNGDORF TDAI-3400 Stereo Streaming & Audio Processor Integrated Amplifier - (Optional HDMI module INCLUDED)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 soundThrough 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.Connect audio and video sourcesA 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 playerThe 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 RoonReady, Spotify Connect, and Airplay as well as internet radio. TheTDAI-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 (MasterQuality Authenticated) is an award-winning British technology that delivers the sound of the original master recording.Control the TDAI-3400 with an appThe“Lyngdorf Remote” app automatically discovers the TDAI-3400 connected to yourlocal network, and you will be able to adjust all the basic functions likeinput selection and volume level from your handheld device. The built-in mediaplayer can be controlled directly, and you can access music files stored on pendrives connected to the Lyngdorf TDAI-3400 as well as search all files storedon your local hard drives. Swiping left and right gives you access to cover artas well as informing you of the signal resolution.“LyngdorfRemote” app is available for free download from both IOS and Android.HDMI 2.1 input/output OPTIONAL module (Included)The HDMI 2.1 module allows pass through of the higher contrast and greater detail resolution that HDMI 2.1 supports, up to 8K 50/60Hz and 4K 100/120Hz. It also supports TVs with the latest Enhanced Audio Return Channel (eARC) and CEC. The HDMI 2.1 module can be ordered with a new TDAI-3400 or fitted to an existing TDAI-3400. It provides two HDMI inputs supporting audio up to 192kHz/24 bit and one HDMI in/out with eARC/ARC.SpecificationsDescription: 2-channel integrated amplifier and audio processorPower handling: 2×400 W RMS @ 4Ohm / 2x200W RMS @ 8OhmMax output current: 40AAudio 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): 2 x coaxial digital (≤192kHz / 24 bit), 1 x AES-EBU digital (≤192kHz / 24 bit) 3 x optical digital (≤ 96kHz / 24 bit), 2 x USB A, 1 x USB B (≤384kHz/32 bit + DXD / DSD64 / DSD128, MQA decoding)Analog inputs: 2 x Analog Single Ended RCA (Max level: 4.0V = 0dBFS), 1 x Microphone input for RoomPerfect™ calibrationHDMI 2.1 module (optional INCLUDED): 1 x HDMI Output / 2 x HDMI Inputs (PCM ≤192kHz/24bit), eARC/ARC (PCM ≤192 kHz/24bit), CEC integration, HDMI 2.1b support, HDCP 2.3High-end analog input module (optional INCLUDED): 1 x RIAA Phono MM, 2 x single ended RCA, 1 x balanced XLRDigital 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 JackEQ: RoomPerfect™, Pre-Equalizer, ICC, 32 x adjustable voicings holding ≤8 filters with adjustable gain and QMediaplayer: Internet Radio (vTuner), Spotify Connect, Roon Ready, TIDAL Connect incl. MQA decoding, DLNA Support (uPnP/see DLNA formats), AirPlay2, Local file playback (USB)Wireless connections: Bluetooth (for Remote Control and 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 freestandingHeat dissipation value: 270 BTUDimensions (Wx H x D): 45 x 10.5 x 36 cm (including connectors) / 17.7 x 4.1 x 14.1 inchesWeight: 8.2 kg / 18.1 lbFinish: Matte black
# Lyngdorf Audio TDAI-3400 – USD $6,716
It's a seller's market for quality integrated amplifiers right now; good examples move quickly. At USD $6,716, this TDAI-3400 sits at the 75th percentile of recent comps (median USD $6,410), so you're paying a premium. That's defensible if the unit is pristine and fully equipped, but verify the asking price against actual sold listings rather than asking prices—there's often daylight between the two. Lyngdorf's reputation for build quality means even older integrateds hold value, but USD $6,716 assumes everything works and nothing's been repaired.
Before committing, confirm the amplifier powers on cleanly with no hum, crackling, or thermal shutdown issues—the DSP engine and Class D output stage are reliable but not immune to age. Verify all inputs and the USB connection function, and check that the original remote and any firmware updates are included. Ask about service history and whether it's ever been recapped or serviced. If it's over ten years old without documentation, factor in potential maintenance costs.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Lyngdorf Audio was founded in 2005 by Danish audio innovator Peter Lyngdorf, who brought decades of industry experience to the venture. Lyngdorf's career in high-fidelity began in 1975 as a distributor of home entertainment components, followed by the establishment of HiFi Klubben, a Northern European retail chain, and the creation of DALI (Danish Audiophile Loudspeaker Industries) in 1983. This heritage of audio entrepreneurship and technical expertise informed the company's mission to achieve absolute perfection in sound reproduction through advanced research and development.
Lyngdorf Audio specializes in high-end digital amplifiers, preamplifiers, and surround processors built around proprietary technologies including the Equibit digital amplification system and RoomPerfect room correction software. The company is known for pioneering fully digital amplification and for integrating sophisticated digital signal processing into premium audio systems. Their product philosophy emphasizes the transformation of digital audio data directly into optimized speaker-driving signals, eliminating traditional analog conversion stages.
The brand occupies the luxury segment of the high-end audio market, positioning itself among the world's most sophisticated audio manufacturers. This positioning was solidified in 2007 when Steinway & Sons, the legendary piano maker, granted Lyngdorf exclusive rights to develop audio systems under the Steinway Lyngdorf brand name. Today, Lyngdorf Audio operates as part of the broader Steinway Lyngdorf portfolio, serving discerning audiophiles and professionals who prioritize cutting-edge digital technology and meticulous sound reproduction over conventional amplification approaches.
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