Dedicated AC Line or Upgrade Equipment?


I am wondering how many of you out there have dedicated ac line for your audio system. I have heard that getting a dedicated ac line does wonders for your system.

By dedicated ac line I mean either having a sub-circuit totally dedicated to your audio, or in some cases, running a separate 20-amp ac line with its own electric meter. In the extreme case, I have heard that people have bought power generators (no - not the PS Audio kind) to power their entire audio system so that they can get the optimal audio performance.

I am thinking about upgrading to a class A amp on my system. However, I am concerned that without a dedicated 20 amp line, I may never get the optimal performance out of the class A amp. For example, I currently bi-amp my main left/right speakers with a Krell KAV-1500 5 channel amp (class AB). In the owners manual, Krell advises using a dedicated 20 amp line to get the optimal performance out of the amp.

So is it a moot point to even think about further equipment upgrades when the source of my audio system is not optimized - that is, when I don't have a dedicated ac line.

I like to hear from people who have experienced with dedicated ac line and whether they think it is worth getting a class A amp before one has a dedicated line.

Thank you for sharing your insight.
avguy
Hi Avguy; I have 5 20 amp dedicated outlets and consider them the foundation of my system. Because of the number of outlets needed, and the distance, I did have to go with a sub-main panel (with space for 8 breakers) from my main breaker box. The ded. line (to sub-main) comes off a 50 amp breaker in the main. The sub-main is fed by a 6 ga. stranded cable-- overkill I know, but I had it and it was pretty much in place.

My sub-main has 4 20amp breakers, and BTW, I tried using a box with glass fuses, but it really sounded excessively soft, dull, and boring. Redkiwi (A'Gon) member said ceramic was much better, but I couldn't find ceramic fuses.

I also had the sub-main grounded to 3 six ft. copper rods driven into the ground within a few feet of my ded. outlets. The main house ground is still active of course. I use 4 Hubbell audio grade outlets ( from www.fatwyre.com ), and one FIM (also 2 silver plated Acmes on speaker subs to nonn-ded. outlets). I replaced all stock power cords with good quality custom cords.

The benefits of this ded. system were huge, and initial cost was only $900. (not including power cords). Noise floor dropped dramatically, dynamics improved a lot, and silences (blackness) became much more silent. A good ded. system should imrove your existing system much more than an amp could. I had my system installed by a licensed electrician, and recommend that approach unless you're totally confident in doing the work yourself. Good Luck. Craig
I strongly advocate the use of several dedicated circuits for your system. I use four dedicated 20Amp circuits utilizing Hubbell Hospital-Grade receptacles and 8 AWG Romex (yes, it is harder, but by no means impossible, to get the 8 AWG cable connected to the receptacle). All the KRELL (both Class AB and noe Class A) gear I've ever owned has benefited greatly from the use of these circuits in dynamics, headroom, and speed; and it has allowed me to upgrade to monster amps without worry or compromise. You won't regret it.
I'll add my voice to the roar:
get the dedicated lines.

At least change the outlets!

KP
I have a Krell KSA 150. This is cheap and easy to do to give you a sample. Run one 20 amp line to your amp. You will hear a noticeable difference. Warning it will lead to more dec lines!!!!!
I have the krell kas mono blocks and have two 30amp dedicated ac line to it. If you don't plane on haven a dedicated ac line than don't buy class a.