My only experience is with the older Modwright upgrades, which were all very positive. Had a Transporter way back in the day that gave years of enjoyment. Later had an Oppo 95 which was also great.
Never tried the amps but I can imagine they are well done based on what I've seen from Dan's upgrade packages. If there's a "house sound" I would call it smooth and natural. Detail is really good but not in your face, and everything just seems believable instead of artificial (which is how the Oppo sort of sounded prior to upgrades).