Amp and preamp on same outlet?

Hi Jim, sorry, I just got back to this thread, yes, I have been listening, I do have a 10/3 romex connected to a furutech GTX-D Rhodium for my amp, yes, The Krell 700cx amp comes with a captive power cord that says 600 volts rating on it, Jim, I have said over and over, my amp is NOT useing all 30 amps, it simply spikes over 20 amps, all I am saying Jim-Jea48, My krell 700cx runs cooler, more dynamic, bigger sound stage, more or less, effortless useing a 30 amp single pole breaker versus a single pole 20 amp breaker, I was shocked after 20hrs of burn-in of the breaker at the difference this made, Damn Jim, this is the best cheap tweak ever I have done, more than cost effective, I do not know why or how Jim, But I assure you, the 20 amp breaker in my opinon, was chocking my amp!, Thankyou jim for all the post you have done, I really don't have an explaination, I am just telling you that this works, no problems, and was worth doing, and that I know many members of audiogon that did the same here with their Krell amps, I was afraid to do it Jim, Chris Vanhas of vh-audio sold me the furutech GTX-D R with the understanding that it would not heat up or damge the outlet with a 30 amp breaker because of how well it is built, as it turns out, he was correct, not even warm!, I have checked this outlet over and over, the wires going to it, if any smell was coming from it, for heat, nothing, the wpo-wall power outlet is cold all the time with NO issues, thanks jim.

Jea48, one of these audiogon members that has e-mailed me for months about the 30 amp breaker is MRvordo, you can consult with him, maybe bring him to this thread, he uses the 30 amp breaker on his krell 750mcx mono amps, I believe a 30 amp breaker for each?, any way, every aspect of what he said this will do for my amp was spot on correct, he is one among many others that have done this with no issues.

^^ If you are going to operate a 30 amp breaker, make sure the line it controls is also rated for 30 amps.

Otherwise you risk a fire. I bet you will find though that the 20amp wiring is also 'limiting' the amp; at any rate you will do well for yourself to follow my advice in the above paragraph.

Ralph- The guy just does not get it. He's talking how he think it sounds, you and Jim are talking electrical safety codes and specifications.

Audiolabryinth- Even if were true that the larger breaker is somehow making your system sound better (I'm betting the recommendation from Krell came about like Jim theorizes, but let's put that aside. What do you think might happen if there is a short or other failure downstream of the 30 amp breaker, such that there is a long term "demand" for more than 20 amps but less than 30 amps? I'm no ee, but my guess is that there is a reasonable possibility that the house wiring, or receptacle, or power cord downstream of the breaker, will overheat, unless they are ALL also rated for 30 amps. What happens after that? I'll give you a hint, you can't shout it in a crowded theater. If your insurance co. is diligent, they'll hire a forensic ee like Jim, who will tell them that you modified your electrical system in a manner that is unsafe and does not meet code. Then your insurance company will say, "thank you" to Mr. EE and "go pound sand" to Mr. Audiolabyrinth. CLAIM DENIED. Of course, there's also the possibility that the insurance co wont' be talking to you, they'll be talking to your heirs. It's your call, dude. They are looking out for you. Do you think Krell gives a rats a$$ about you?

I would like share some info in regards to the Krell references made on this thread.
I also believe the info would be of interest to the OP Audiolover.

If I can ask Audiolabyrinth a couple questions first.

@Audiolabyrinth

Am I reading your posts here right that you are using a 30 amp circuit breaker, but not 30 amp rated line or a 30 amp outlet; and therefore a 30 amp terminated male end on your Krell power cord ?

Has your 20 amp line been checked ?

So I have a friend considering a Krell amp. He has a shared 15 amp line for his present set up. To offer him more insight I reached out to Patrick at Krell about a dedicated 15, 20 and even 30 amp service (in a second email) - this due to what I read in this thread.
I would like to share this info from Patrick.

Patrick's answer.

The answer to this is somewhat dependent on the speakers being used, as well as the length of the speaker cables. We recommend 20 amp service because with rare exception it almost always works best in terms of the amplifier always having continuous current available to be able to instantly respond to whatever type of listening style a customer may have.

The above now said, in some homes installing a 20 amp line is either not possible, and or its install cost can be prohibitive, depending on the age of the house. I know for a fact that there are many customers out there who are successfully running systems with large Krell amplifiers using a 15 amp line. Would there be a dramatic sonic difference between using a 15 amp line and a 20 amp line? Maybe and maybe not. A good stiff 15 amp line verses a weak 20 amp line, in my opinion you would probably not hear the difference between these two.

As the expression goes, “the proof is in the end result”. If when using a 15 amp line, the amp sounds open and fast and detailed with good bass and sound staging, and it does not pull the 15 amp line breaker down during loud playback or loud musical transients, he should be good to go as is. However if he is tripping the 15 amp AC line breaker occasionally during playback, he should go up to a 20 amp line if possible.

The Key words that stood out to me in the above.

Speakers used
Length of Speaker Cables
The proof is the end result (the amp sounds open and fast and detailed with good bass and sound staging)
A good stiff 15 amp line versus a weak 20 amp line.

And from some of the discussions on this thread about 30 amp service I asked.

Whats the deal with 30 amp service. Is it ever needed or warranted.
FWIW I take his response as normal for someone representing a company that makes high power amplifiers.

Patrick's response

As they say, “the more the better” and giving a powerful amp like the FPB-600/600c/700cx a dedicated 30 amp line will make a serious difference from a performance perspective that would be obvious straight across the audio frequency spectrum. Under these circumstances however you would need to re-terminate the male end of the amps AC cord with a 30 amp twist lock type male connector. Is this really needed? Not really. But you asked . . .

I interpret Patrick's comments that for 30 amp service, a 30 amp breaker, 30 amp line, 30 amp outlet and a 30 amp male connector is required to go this route.

Happy Listening.