TacT (Lyngdorf) TDA 2200 Digital Amplifier, no remote control or software. 200 W per channel. It all started with Peter Lyngdorf. He was a pioneer of the Danish HiFi industry where he had been trying to turn quality HiFi into a mass market commodity since the late 1970s. TacT Audio Denmark brought only a few models to market using the TacT brand before they decided to rebrand themselves as Lyngdorf Audio as we know it today. While still operating as TacT Audio Denmark the company broughtMillennium mk III, as well as the more moderately priced semi-digital (analogue pwm control)SDA-2175power amplifier, and the semi-digitalSDAI-2175integrated amplifier to market. The fully digital integratedTDA-2200with modular extension options (allowing for future addition of room correction and analogue inputs) soon followed. At the same time the company was working on a new room correction system to replace the one lost in the split from TacT. The resulting technology was finished in collaboration with Jan Abildgaard Pedersen in 2006 and brought to market as RoomPerfect. Some comments on Audio Forums on comparisons between Chord SPM 1200E, Lyngdorf SDA 2175 and TacT TDA 2200 I have done some extensive comparison (on my MartinLogan Vantage speakers) of the Lyngdorf SDA 2175 against my Chord SPM 1200E. The shocking news is that the Lyndorf is less coloured and has slightly better low-level detailing. The Chord has a bigger (higher, wider, but a bit less deep) sound stage and deeper (but less quick/neutral) bass. It also sounds a bit more compelling musically. However, the Lyngdorf is not clinical AT ALL! It even sounds very sweet and homogenic, with instruments taking shape in a very well-defined and extremely detailed way. The Chord is in some ways rougher and less clean, with the occasional steely edge on high strings. I was quite surprised, because the Chord is about 7 times as expensive! I still prefer the Chord, but not by a great margin! The TDA 2200 has a more relaxed character, with even more low level details and more precise and more upfront imaging than the SDA 2175 (will have to compare apples to apples with the SDAi 2175, of course, the results of the SDAi 2175/SDA 2175 compared with the TDA 2200 have a lot to do with the quality of the front end)