Krell 700cx, and Tara cobalt A/C power cord.

@ Mrvordo, Hi, I have a ways to go on building my system, you already have a magnificent system and room, congrats!, you have helped me here with this power set-up, thankyou very much, cheers to you.

Hi Audiolabryinth ,

I thought I'd share with you my experience using an aftermarket power cord with my Krell FPB300cx. As you know, the Krell CX line comes with a captive power cord set-up. Purely out of inquisitiveness, I cut the wall plug off the 300cx's captive cord and rewired a male C15 IEC adaptor to the end of the 300cx's captive cord (still keeping the same length of the captive cord - in case I needed to re-install the wall plug back). I then plugged in my Shunyata Research King Cobra CX (which is terminated with a C15 male IEC adaptor) into the Krell's captive cord.

To me, the improvements were so "significant" that I have been running this set-up for the last three years. In my experience, the improvements were across the frequency spectrum - even more low end slam (yes, even for a Krell!), smoother mid-range and highs. However, I would say the most significant improvement was a subjective "opening up" of this fine amplifier to become (finally) unrestrained! The translated effect of this was a more "holographic" soundstage (in my listening room). With the Shunyata King Cobra CX, the 300cx now "breathes" more freely and has a feeling of unreserved power - I feel just as a Krell should be!

I should also mention that I did some extended trialling of several other after market power cords on the 300cx (all of which I also own) including a Wireworld Aurora, PS Audio Statement (the original version) and a Shunyata Anaconda CX.

Of all these, the most synergistic match (for my system) was the Shunyata King Cobra CX on the Krell. Each of the fore mentioned power cords made a noticeable difference to the sound of the 300cx (and in all cases were an improvement over plugging in the 300CX's captive cord directly into the wall socket).

Given your 700CX's power draw, if you ever decide to experiment by wiring a male IEC adaptor into your captive cord, (the usual disclaimers/caveats apply - that it's at your own risk and that you understand wiring for correct polarity, etc.) I would strongly suggest a C19 IEC adaptor (which is a 30A high current version) and an equivalent high-current terminated aftermarket power cord of your choice.

I would be interested to hear your (or any other A’gon member’s experiences) if you ever decide to take this route on a Krell FPB series amp (with a captive power cord)!

All the best!

There are a couple of corrections I wish to make in my post above: What I meant to say was "...and rewired a "male" C15 IEC adaptor to the end of the 300cx's captive cord...I then plugged in my Shunyata Research King Cobra CX (which is terminated with a C15 "female" IEC adaptor) into the Krell's captive cord.".

Also, It doesn't appear that C19 IEC adapters are easily found in 30A versions, but there are 250VAC 20A versions available.

@ Pantera6, Hi, Thats interesting post!, you are saying you kept the stock power cord on the unit, and added a female plug at the end and used a aftermarket power cord?, wow!, thats a very long power cord, Why did'nt you put an iec connector on the amp, and then use the after market power cord straight from the amp to the wall receptical?, I asked Krell about putting an Iec on the amp, of course they said they did not recommend that because of my amp being a 700cx, I really would love to use my Taralabs cobalt power cord, that has oyaide plugs from the Tara factory, on this amp, My captive power cord on my Krell is a 30 amp cord, I do not believe their is a 30 amp after market power cord?, your post is very informative!, cheers.

@ Pantera6, that would be a 15ft power cord in my case, my captive cord is 9ft long.