What Mkfischer is suggesting is clear enough to me, but I do not agree that you "need" a dedicated line based on your current system. The difference between a dedicated line and a dedicated circuit is the dedicated line is completely independent of of the electrical system the rest of your house is running on. This will require public service to come out to your house and run a new service to your house with its own meter. As compared to a dedicated circuit, the only difference is you will not be sharing a common neutral and ground. A dedicated circuit is a circuit that is dedicated to your audio system only and has nothing else on it (lights, appliances, computers, etc.). It has its own circuit breaker but shares a common neutral and ground with the rest of your house. You do not need an electrician to do anything except perhaphs change it from a 15 amp breaker to a 20 amp breaker(and even this may not really be necessary). The only caution here is most 15 amp circuits use 14/3 romex and 20 amp circuits use 12/3 romex to handle the higher current demand. Outlets in your kitchen will be 20 amp and are required by code to be 12/3 romex. It is a difference between 14 AWG and 12 AWG copper. My entire house is wired with 12/3 regardless of whether it is a 15 or 20 amp circuit. I built my own sound room and ran 4 circuits into it (2 analog, 1 digital, 1 lighting). So far I've been doing fine with a 15 amp circuit breakers and I have two pure class A 200 watt per channel BEL monoblocks on one circuit with no problems. Your amps are the only issue here as your preamp and source components use very little current.
A dedicated line is considered to be the ultimate power source. The question is, how much will it cost to install such a system versus installing a dedicated circuit, and will it be worth the expense. My guess is a lot more and I do not think yours system justifies the expense. If you do go the the expense of installing a dedicated circuit though, you may want to consider doing two so you can isolate your digital from your analog.
Do some homework, read the Stereophile issues mentioned above, and be prepared to explain to the electrician what you want to accomplish. You may also want to install some industrial or hospital grade duplex outlets(even it you decide not to do anything eles). Or you may just want to leave well enough alone and enjoy the music.