If you system is slow or missing detail I will second the Electraglide cables (I owne the Fatboy, Reference Glide, and Tri-Glide) I bought and sold the Shuyata cables $1100 each retail as they put a fog on my system. You mileage will vary depending on your equipment.
As far as worrying about limiting current and compression, check what the maximum current consumption of you components are before buying the unit so that you aren't overdriving into that state. I run a PS Audio Powerplant 300 MWII for my front end and nothing on my amplifiers. The 1200 is huge and generates a lot of heat (as much as a class A amp) but has a high watt output that should drive your source and amplifier depending on your amp. If you can't audition then it might be worth buying a 300 Multiwave I (at least) to try and see if you like that on your CD player and maybe preamp. This will give you a flavor of the sound, and then get the larger one for the amps if you like it and see if it runs the all of the items.
As far as worrying about limiting current and compression, check what the maximum current consumption of you components are before buying the unit so that you aren't overdriving into that state. I run a PS Audio Powerplant 300 MWII for my front end and nothing on my amplifiers. The 1200 is huge and generates a lot of heat (as much as a class A amp) but has a high watt output that should drive your source and amplifier depending on your amp. If you can't audition then it might be worth buying a 300 Multiwave I (at least) to try and see if you like that on your CD player and maybe preamp. This will give you a flavor of the sound, and then get the larger one for the amps if you like it and see if it runs the all of the items.