PSI Audio of Swiss Land

[Purité Audio]

Our first pair of PSI A17M loudspeakers arrived today and they are a lovely sounding loudspeaker.
I first heard them when Christof Faller used them for a demonstration Of their IAP- processors at the Munich HiEnd show.'



Keith

 

[Purité Audio]

PSi's are on the inside Kii THREEs on the outside.
Keith

 

[Mivera]

Where's the Superstream? Are these active speakers?

 

[Purité Audio]

PSI and Kii THREE together,


Keith

 

[amirm]

Are they powered?

 

[Purité Audio]

They are active, PSI destined their own Class G amplifiers,
http://www.psiaudio.com/en/our-technology/class-g-amplifiers/

I have been using them with Prism Sounds new 'Callia' dac/preamp/headphone amp, together they make a fantastic system for under £5k .
You can adjust the A17-Ms output so they can be placed anywhere in the room, PrismSound are a very well respected UK pro audio manufacturer, the Callia is a domestic version of their pro D/A converter.
I am hoping to compare this system against much more expensive passive 'audiophile' set ups.
Keith

 

[amirm]

I know Prism sound and its principals quite well. I used their loaner dSound measurement system for this article: http://audiosciencereview.com/forum/index.php?threads/a-deep-dive-into-hdmi-audio-performance.56/

They certainly know what they are doing. The famous J-test jitter signal for example came from Julian Dunn when he was their Chief Technologist!

 

[amirm]

They are active, PSI destined their own Class G amplifiers,

My first introduction to Class G was in my Carver receiver circa 1982! It was very sensitive to line frequency noise, picking up the heater element in our stove cycling on and off . Suffice it to say, could not listen to music while my wife was cooking.

Class G switches the power supply rail voltage and as a result, highly increases amplifier efficiency since much less heat is generated at lower wattages. The drawback is that just like class D, you now have switching noise to filter. So their advertising blurb of all goodness and no drawback is not correct.

 

[Purité Audio]

Bit more about Class-G here,
http://www.soundonsound.com/reviews/psi-audio-a17m-a21m

Keith

 

[Purité Audio]

PSI review from SoundonSound magazine.
http://www.soundonsound.com/reviews/psi-audio-a17m-a21m

Keith

 

[Sal1950]

PSI review from SoundonSound magazine.
http://www.soundonsound.com/reviews/psi-audio-a17m-a21m
Keith

Now there's some handsome speakers, much better than the girly white ones you have in house.
Did I mention I love your flooring?