I was offered Devialet Pro 440 For a few days home audition. Waited 24 hours for cable to settle ,selected a broad range of my favorite music , having had good night’s sleep followed by breakfast i proceeded to play the Devialet. CONCLUSION : I preferred my MSB Analog DAC , Aurender and Pass Labs Xa100.8 combination over The Devialet Pro 440, Roon Nucleus and NAS Hard Drive. . There was absolutely no comparison. On lower frequencies Devialet had no visceral slam and the Wilson Sasha can SLAM even better without SAM. Mids on the Devialet had no body . Tops were thin on the Devialet. As I turned the volume up on the Devialet , certain frequencies became louder ; mid bass upper mids and tops. Hurt my ears. could not hear air between instruments , transparency or the emotive aspects of music. Devialet felt compressed . The Devialet was set up to its best by Devialet dealer and everything was exactly the same in my room. The MSB/Pass Labs /Aurender combo sounded natural , real , normal. Solid bass with visceral slam , organic mids and painless clean clear upper frequencies. Based on proud Devialet owners I really wanted the Devialet to sound better. They take less space ,use less electricity, and way less cables. I liked Roon for its meta data and organising material from multiple sources in one screen. Also had I sold my kit and bought the Devialet brand new I would have spare cash . But try as hard as I could tuning bass . Treble , balance , SAM , equalizer etc I could not enjoy the sounds it produced. Maybe the DAC in the Devialet could not compete with MSB. Maybe the Devialet amplifier section could not compete with my Pass Labs Xa 100.8 mono blocks. The Devialet Pro 440 is also a pair of mono blocks. This friends is MY honest review .