I am using a D400 with Kanta 2 with a SVS PB1000 Pro, I can tell you with the right setup, this combo's detail and transparency is not easy to match with any other system.
For two S812, it depends on your room. Is there anything in particular you are not satisfied with the sound? In most cases, two subwoofers are better than one because it helps to reduce the room mode effects. However, is there any point in the bass region you are not satisfied with now? if not, what is there to improve?
Mind you, you have to do some work with the inputs to make the Devialet sound great ...... I use computer as source and I am using a 10mhz clock connected to DDC which then links to the D400 via AES, the same 10mhz clock also clocks the network switch, the network cable also goes through FMC. As Devialet is all-in-one design, the only tweak possible is with the source. The DDC apparently passes the clock signal into the Devialet via AES, and this gives a marked improvement in the level of details Devailet can produce. With a clock, the Devialet is producing details in line with the top DAC available today, which I find quite amazing for a technology developed 10 years ago.
For tuning, Focal speakers are excellent for air, treble details and bass resolution. Devialet is also excellent in bass production. I don't think even Gryphon is able to beat the Devialet's bass resolution if Devialet is set up correctly. Gryphon however is going to produce a mid range with more texture and less 'thin' sound, because with lots of air it is easy for Focal speakers to sound 'thin' and lack of texture. If using Devialet, focus your tuning and cable matching on regaining the texture. When it is done correctly, the Focal/Devialet produces details that are even more than some Wilson Audio systems. Focal is never going to produce the texture like Wilson Audio speakers, but neither is Wilson Audio speakers able to produce as airy a soundstage as Focal. On my system, I think the texture is still acceptable with Devialet D400.
For two S812, it depends on your room. Is there anything in particular you are not satisfied with the sound? In most cases, two subwoofers are better than one because it helps to reduce the room mode effects. However, is there any point in the bass region you are not satisfied with now? if not, what is there to improve?
Mind you, you have to do some work with the inputs to make the Devialet sound great ...... I use computer as source and I am using a 10mhz clock connected to DDC which then links to the D400 via AES, the same 10mhz clock also clocks the network switch, the network cable also goes through FMC. As Devialet is all-in-one design, the only tweak possible is with the source. The DDC apparently passes the clock signal into the Devialet via AES, and this gives a marked improvement in the level of details Devailet can produce. With a clock, the Devialet is producing details in line with the top DAC available today, which I find quite amazing for a technology developed 10 years ago.
For tuning, Focal speakers are excellent for air, treble details and bass resolution. Devialet is also excellent in bass production. I don't think even Gryphon is able to beat the Devialet's bass resolution if Devialet is set up correctly. Gryphon however is going to produce a mid range with more texture and less 'thin' sound, because with lots of air it is easy for Focal speakers to sound 'thin' and lack of texture. If using Devialet, focus your tuning and cable matching on regaining the texture. When it is done correctly, the Focal/Devialet produces details that are even more than some Wilson Audio systems. Focal is never going to produce the texture like Wilson Audio speakers, but neither is Wilson Audio speakers able to produce as airy a soundstage as Focal. On my system, I think the texture is still acceptable with Devialet D400.
