This website uses cookies. For more information please review our privacy policy.

Manage Accept All

We're dispatching fast; Coronavirus information available here.

Fast dispatch: Covid-19 info

Arrow left Lyngdorf

Lyngdorf TDAi 3400 Integrated Digital Amplifier


Product Reference


View Description Free Delivery Downloads

0% Finance Available

View Available Plans

Part Exchange Available

More info

Condition: New

Brand-new, unused, unopened and undamaged item in original retail packaging (where applicable).


Limited 2 year warranty.  More info

Try It At Home More Information
Optional Extra 2
Optional Extra 1
Lyngdorf TDAi High-End Analogue Input Add On
Lyngdorf TDAi High-End Analogue Input Add On
More Details
+ £399.00

High-End 'Analogue Input' add on module for Lyngdorf TDAi amplifiers. 

Lyngdorf TDAi High-End HDMI Input Add On
Lyngdorf TDAi High-End HDMI Input Add On
More Details
+ £399.00

High-End HDMI add on module for Lyngdorf TDAi amplifiers. 

Guaranteed In Stock

Order now for delivery on
Fri 24th September 2021

Only 1 left in stock.

More Information

The Ear

The Ear

"...I was absolutely blown away by the TDAI 3400. It is an absolute stand-out product in every way. If it has vices I failed to find them in the weeks in which it sat on my rack..."

Lyngdorf's new integrated amplifier and audio processor is their most powerful product yet.

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. You can create your own equalising filter to optimise your speaker performance, and through TDAI-3400’s built-in tool you can to customize 32 voicings, which allows you to change the overall tonality of your system related to media source and listening situation. The impressive speaker output section is based on Lyngdorf's heritage Equibit™ technology designed with extremely fast switching low-Rds MOSFETs for the highest possible efficiency. It combines full dynamic performance at low levels with an extreme maximum current output of 40A. With Lyngdorf's 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.

Impressive build quality is a salute to modern industrial design, the chassis of the TDAI-3400 is executed in the signature sleek design of Lyngdorf Audio. The TDAI-3400 doesn’t generate much heat, allowing for passive cooling with no need for noise-inducing fans or vents. With the TDAI-3400, you will enjoy the extremely low background noise of the digital signal processing. 

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.

Connect Audio and Video Sources

  • Tick Seven digital inputs including a balanced AES/EBU
  • Tick USB inputs connects to music stored externally
  • Tick Two analog inputs for simple analog music sources
  • Tick Optional module with four high-end analog inputs
  • Tick Optional module with three HDMI inputs and one HDMI output




With the HDMI® module, you can connect up to three HDMI® devices, including Blu-ray players and other sources, to your TDAI-3400 and have just one HDMI® cable to the TV. Simply let the TDAI-3400 be the central hub for all your devices, with no more nests of cables going to and from the TV. Don´t settle for the sound coming from your TV´s built-in speakers; it´s time for an upgrade.

CEC - The HDMI® module is CEC compatible, meaning the TDAI-3400 can automatically turn on and off when your TV or connected HDMI® device does. This feature also enables you to use your TV remote to control the volume of the TDAI-3400.

ARC - The HDMI® module supports ARC (Audio Return Channel), which sends the audio from the TV to the TDAI-2170 through the HDMI® cable. This is the perfect solution if you have a TV with a built-in tuner and you want audio to come from your audio system.

High-End Analog Input

High-End Analog Input

Supplementing the standard analog inputs, the High-End Analog Input module is the ideal solution for connecting analog sources of the highest quality. It comprises 3 RCA unbalanced and 1 AES (XLR) balanced inputs. Input selection is carried out via the double gold-plated relays, normally only seen in expensive high-precision measuring equipment. Since analog signal levels can vary considerably, the input sensitivity of each input can be increased by up to 24dB. The sensitivity is adjusted in the pre-amp section before it is fed to the converter, granting full dynamic range for the conversion. The A/D conversion is performed by an AKM-AK5394A processor, which, with a dynamic range of 123dB, has proven its capacity to convert music to the digital domain in many Lyngdorf Audio designs.



With most systems, more than 50% of the sound you hear comes not from your speakers, but from your room. The placement of your speakers and the shape and dynamics of the room—echoes, reflections, and absorption, have great influence on what you hear. RoomPerfect™ is the most advanced and user-friendly room correction system in the world. It identifies the characteristics of your speakers and the influence of your room, and it takes the room out of the equation. With RoomPerfect™, your speakers sound exactly as the manufacturer intended them to, not the way your room makes them sound.


  • Tick Extreme maximum current output of 40A
  • Tick No need for noise-inducing fans or vents
  • Tick Built-in media player and voicing tool
  • Tick Equipped with RoomPerfect

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

Power handling 2 x 400 W RMS @ 4Ohm / 2 x 200 W RMS @ 8Ohm
Standard digital inputs 1 x AES-EBU (≤192kHz/24bit)
(Asynchronous) 2 x Coaxial (≤192kHz/24bit)
3 x Optical (≤96 kHz/24bit)
1 x USB B (≤384kHz/32bit, ≤DSD128, DXD)
Standard 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 (Optional ) 1 x RIAA MM, 2 x single ended RCA
1 x balanced XLR
Standard outputs 1 x Stereo Analog RCA
1 x Stereo Analog XLR
1 x Stereo Digital Coax
1 x Headphone 3,5mm
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%
Mediaplayer Roon Ready
Spotify Connect
DLNA Support (uPnP)
Local file playback (USB)
Internet Radio (vTuner)
Wireless connections Bluetooth (4.2 BLE)
Wi-Fi (802.11 n/ac)
Trigger (12V) 1 x Input, which can be related to audio inputs
1 x Output
3.5mm jack / Thresholds approx.: On: 2.4V Off: 1.6V
Control interfaces Web-interface
IP Control
1 x DB9 connector for RS232 control
1 x RJ45 Ethernet LAN connector
2 x USB connectors (Type A)
1 x SD card slot (Backup of filters and settings)
Accessories included RoomPerfect™ Microphone
Microphone stand
cable & mini-jack connector
Remote control (IR / BLE)
Dimensions (W x H x D) 45 x 10.5 x 36 cm (including connectors)
Weight 8.2 kg
Finish Matte black

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

Lyngdorf TDAi 3400 Integrated Digital Amplifier

Lyngdorf TDAi 3400 Integrated Digital Amplifier Warehouse Deal

Was: £4795.00 Now: £4200.00

Part Exchange Available

Looking to upgrade and not sure what to do with your old gear? Trade-in with us and take the hassle out of finding a new home for your equipment.

We can take back any type of product we sell, from cables, to projectors, speakers, amplifiers, AV receivers, subwoofers and more.

Just fill in the form below and we'll get back to you.

Please note we don't purchase second hand goods for cash, we take trade-ins as part payment towards the purchase of new equipment.

PayPal Credit - Flexible Credit

Buy Now, Pay Later: Get 4 months 0% finance when you spend £99 or more. Look for the PayPal Credit button when making your purchase.

More information on PayPal Credit is available here.

PaybyFinance - Pay Monthly

Pay monthly plans up to 60 months, on loan values between £500 and £25000. Minimum order value of £556.

0% IF6 6 Months
0% IF12 12 Months
0% IF24 24 Months
0% IF36 36 Months
0% IF48 48 Months
15.9% IB60 60 Months

Choose your deposit amount

Deposit variable between 10% and 50%, subject to a minimum loan value of £500.


Please note: the above quotation is an indicative cost and actual monthly payments may vary by +/- 2p per month.

For further information please visit the finance page.


This item is in stock and ready to dispatch. Limited quantity available.

Please see our stock information page for more details on how we show stock information on this website.


This item is available dispatch Monday to Friday, subject to cut-off times and excluding public holidays. Next working day and weekend deliveries available.

Delivery is available to most addresses within the United Kingdom. Some services may not be available to all postcodes. More information is available at the basket and on our delivery page.

We do not dispatch orders to addresses outside of the United Kingdom.

Email Contact Form

Room Perfect Overview

Others Also Bought