I use power conditioners and factory power cords. As long as you use a quality power conditioner, dynamics should not be a problem with small signal components. When power amplifiers (and possibly some preamps) are plugged into conditioners with transformer isolation, loss of dynamics is very possible.
Following my experience with a highly regarded isolating conditioner, I have stuck with transformerless units and am very pleased with my results. The quality of your results is highly dependent on conditioner quality, and care in determining which component plugs into which outlet. As a general rule, the greater the isolation between digital components and analog components, the better. Power amplifier conditioning may or may not be preferable to a direct wall connection. As has been pointed out, you have to experiment in order to get the best results.
-- Trevor
Following my experience with a highly regarded isolating conditioner, I have stuck with transformerless units and am very pleased with my results. The quality of your results is highly dependent on conditioner quality, and care in determining which component plugs into which outlet. As a general rule, the greater the isolation between digital components and analog components, the better. Power amplifier conditioning may or may not be preferable to a direct wall connection. As has been pointed out, you have to experiment in order to get the best results.
-- Trevor