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Paris Audio Video Show 2021

Easily my favorite demo of the show. Atohm is one of the most trusted driver manufacturers here. They publish complete datasheets with Klippel measurements. I had no experience with their GT range before and wanted a listen for a long time. Atoll, on the other hand : not a big fan. I find their products overpriced and kind of lacking on the technical side. Here are, from top to bottom : PR400 Signature preamp (edit: next to it is the Atohm RS700 DSP power amp), AM400 power amp, ST300 Signature streamer and IN200 Signature integrated amp. Speakers are from sides to center, GT3-HD, GT2-HD (Towers) and the tiny GT1-HD (standmounts). They all performed excellent. Smooth and balanced. Very different music styles were played (including dubstep... no joke) at several SPLs and they did a great job every time. Soundstage was exceptionally consistent, each fade-in so well that at some point I was unable to locate which one was playing. Even when I was standing up in a corner of the room, they still sounded decent off-axis. I guess these should measure with some very wide directivity. If I happen to go back to the passive world, I would seriously consider Atohm GTs. These won't come cheap, tho : 7980€ for a pair of GT3-HD, 4490€ for GT2s and 2490€ for GT1s.
Fresh SoundStage measurements confirm their good behaviour:
 
GT1_HD_tweeter.jpg
The tweeter is a beautiful part. on the other hand, Athom announces a sensitivity of 89 db but on the measurements we are very far from it as we could suspect it .
 
Atohm GT line speakers have a specific crossover that can explain the sound field coherence.
The crossover section for the tweeter has a delay cell that place in phase the tweeter with the midrange speaker.
The end result is the same as the hold method that makes a step in the speaker enclosure moving the tweeter backward.
Did somebody succeeded to listen to the Atohm GT 3 way tower speaker?
 
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