MXA-8400 - what's so special?

Purifi EIGENTAKT technology, PowerPerfect, Channel Balancing Technology - are all words we use to describe the unique features of the MXA-8400 amplifier. But what do all these names and words mean? And how do they impact your product and sound experience? In this video, our CEO Thomas Birkelund explains why the MXA-8400 is so special, and what all these words mean.

[@d.hoffmann7698]

Very cool to hear some technical explanations about the product. I'm wondering if the Powerperfect technology is similar to the the technology in my TDAI-2170, which is also supposed to be quite immune to noise in the power grid?

[@SteinLyng]

The power decoupling and filtering both ways is very similar in the TDAI-2170, and it is also an efficient switch-mode power supply. The other mentioned technologies were developed for the new MXA-8400.

[@truevideos8490]

Too bad it doesn't like low impedance speakers(i.e. Martin Logan) or subwoofers such Lyngdorf BW-20. At least when bridged it seems to work(per its manual) with 8 ohm speakers only.

[@SteinLyng]

The MXA-8400 is absolutely fine with low impedance speakers. Nominal 4 ohm speakers typically drop down around 3 ohm at certain low frequencies, and each MXA-8400 channel is absolutely stable in this area. The BW-20 for example is a typical 4 ohm load, perfectly matching (and developed with) using the SDA-2400 or MXA-8400 at 400 watt, which is plenty. In rare speaker cases where double the voltage and double the watts is required, two channels can be bridged. Technically, that leads to doubling the required load, to provide enough current from the mains. Anyway it’s still 8 ohm nominal according to IEC, so no problem if that drops typically towards 6 ohm.