Lyngdorf TDAi2170 Integrated Amplifier


Lyngdorf’s excellent sounding, sensibly priced stereo digital integrated amplifier, incorporating RoomPerfect room correction system which is very impressive.  Available with additional options for USB, HDMI and audiophile analogue input modules (please specify which you require).  This is an astonishingly good amplifier: effortlessly powerful, sweet, lyrical, quiet and stylish.  Available to order.   Ask for a home dem!

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Designed, developed, and manufactured in Denmark, the TDAI-2170 is a stylish integrated stereo amplifier that has set a new standard in sound. In addition to being fully digital and having flexible upgrade modules and RoomPerfect™ room correction technology, the TDAI-2170 provides the formula for a sound experience that has left critics and listeners astounded.


The Lyngdorf Audio TDAI-2170 fully digital stereo amplifier has, for the second year in a row, been honoured with the Absolute Sound Editor’s Choice Award. In the original review by Robert E Greene, the magazine stated:

“It is hard to imagine that people won’t like this and like it a lot.”

The award is the latest in a long list of accolades and honours the TDAI-2170 has attracted since its launch. In addition to being fully digital and having flexible upgrade modules and RoomPerfect™ room correction technology, the TDAI-2170 provides the formula for a sound experience that has left critics and listeners astounded.



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.  The system is very easy to set up – everything that you need is provided in the box, alongside the TDAi2170, including a calibrated measurement microphone, 8m cable and a comprehensive tripod that enables you to place the microphone easily and accurately.  It’s worth noting thatRoomPerfect™ does not simply apply corrections to the speakers’ frequency response – it also adjusts their power response, so don’t confuse RoomPerfect™ with other systems that do only work to a nominal target frequency curve.  Read more about RoomPerfect™ here.


The TDAI-2170 is 100% digital, without sound-deteriorating digital-to-analog conversions. The digital signal drives the speakers directly, with no translation and no middleman.  This unique and technically demanding solution offers noiseless and crystal clear replay at all sound levels. It will deliver the most enjoyable and uncoloured sound you have ever experienced.  Many people think taht a digital amplifier will somehow sound hard or harsh, but with the TDAi2170 nothing could be further from reality – its character is sweet, organic yet effortlessly powerful and dynamic.  Imagine a powerful high quality valve amplifier and that’s how we feel it sounds, but without the expense, heat, noise.

It’s worth explaining what ‘digital amplifier’ actually means.  The amplifier takes only digital signals (analogue signals are converted to digital via the TDAi2170’s standard Analogue to Digital Converter (ADC) inputs, or via the optional audiophile 24bit/96kHz ADC module) and then converts the PCM (Pulse Code Modulation) data stream into PWM (Pulse Width Modulation) at around 400kHz.  The PWM signal is then amplified directly and only at the outputs is the PWM transformed into analogue by a simple filter of inductors and capacitors.  There is no DAC involved – you do not need one and we struggle to think of a DAC that can match the TDAi2170 for sound quality and sheer musical pleasure.


The TDAi2170 incorporates a clever system called ICC.  When music is being mastered, the level is often very high; upon analysis, you will often find several consecutive maximum samples, indicating something has been clipped away from the original signal. Audio that exceeds 0 dBFS (decibels relative to full scale) will sound very compressed because the headroom is nonexistent. This harsh sound is an unfortunate trend in the music industry and is typically referred to as “the loudness war.”  In order to compensate for this, Lyngdorf have created ICC (Inter-sample Clipping Correction). With ICC, the TDAI-2170 can automatically adjust up to 12dB headroom in the signal processing to avoid clipping of the signal. Through this you will enjoy the full dynamic range and a more natural sound.  All we can say is that the sound of the TDAi2170 seems to live entirely up to this promise!

Whether used with full range, satellite, in-wall, or on-wall speakers, the TDAI-2170 is the perfect choice for any brand or model on the market. Because of its unique technologies, the long-contested challenge of speaker placement no longer compromises performance. On the contrary. Simply place your speakers up against the wall to get the least amount of damaging reflections. From there, RoomPerfect™ will adapt the speaker to the room and remove any unwanted bass boom.   Have a subwoofer? Not a problem. RoomPerfect™ perfectly aligns the subwoofer and speakers’ frequency response, so differences between peaks and dips in the bass and midrange responses are eliminated.

This is worth dwelling upon.  Until we received our TDAi2170, we were a little sceptical that a room correction system could do all of this without extracting some sort of penalty in terms of real music – timing, soundstage etc.  Well, we were wrong – up to a point RoomPerfect™ allows you to push the speakers back to the wall (even when the speaker has rear facing ports you can still get them surprisingly close) and the correction system will sort everything out for you.  So, you can be feed from the need to place speakers with obsessional accuracy where they will often be dominating the room and generally being in the way.  If this sounds too good to be true, don’t worry because it is true.  Of course, no correction system can totally rescue a room that’s built like a Turkish Bath, but you’d be surprised what it manages even with a poor starting point

Lyngdorf’s own boundary woofer designs are ideal partners for the TDAi2170 since they are specifically designed to be placed discreetly against walls.

Additional information

Optional Input Modules

None – Just TDAi2170 & RoomPerfect, +1 Option (HDMI/USB/ADC Module), +2 Options (HDMI/USB/ADC Module), +3 Options (HDMI, USB and ADC Module)


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