questions on zyx airy 1000

It can be found sometimes in original form in France,second hand,but a lot of people built it as on the net you find easily the description (but often in French)
I managed to find one built by a great audiophile on a forum;generally there is about 600/1000 dollars of components in them
The original one may be found ,professionally built for around 300 dollars ,sometimes ,on forum .it's battery powered

Gilles! I use a Jean Hiraga designed amplifier (Lectron JH-50). Heavily modded and upgraded by Nick Doshi. Easily the best amp I've heard in its power class.

Doug, i remember in hifi show very good listening sessions with the lectron.J Hiraga has begun in a French hifi newspaper,then founded a high end DIY hifi newspaper "L'Audiophile" around 19776/77 where they explained how to build 300B amplifier...it was valves and high efficiencies loudspeakers( horns...)
After he designed some product more in the mainstream as Lectron ,and recently he was working with battery powered amplifier... for a Swiss firm.
But he always stayed with his first love as every month one can read his description of big systems (as your can find in Asia and especially in Japan) where sometimes horns for bass ,a few meters long ,are built in the same time as the house, the motor downstairs and the horn (a big hole in the wall)upstairs in the music room.The concrete horn being built with the walls

Many thanks ,Doug, my zyx airy 3 has around 45 hours, and I am totally mesmerised by the music ,and especially the Bach/Harnoncourt ones .I didn't expect so much difference,but the air and 3D are amazing.