I own a Parasound A21 and it is not warm sounding. In fact, I gave it to my son and he is going to sell it to get something smoother and warmer. Their preamps are also not warm and fuzzy.
For separates, I would consider the Schiit Frey+ preamp and Vidar amp or even better,
Van Alstine Tube preamp for $899 and one of his new SET SS amps like the SET 120 and 400. I reviewed them on the AC forum for Frank VA. These amps are heavy hitters, smooth, slightly warm with a killer midrange and deep punchy bass and good high end. They can compete with $5K-$6K amps.
An all Vincent Audio system would also be a way to go for a warmer sound.