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

@ 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.

Audiolabyrinth, as you stated, my original preference was installing an IEC socket on the back of the 300CX, but the (metal) work involved in just cutting out the opening was beyond the tools I had on hand (the rear panel is about ¼ in thick)! The other alternative I considered is getting a back panel off an old FPB300, which has an IEC socket, but there are some panel layout differences, as my 300CX has cast inputs, etc. It was much easier to just wire in a male IEC socket to the end of the captive cord – just to see if there was a material and beneficial difference to the sound.

What I can’t explain (and will not attempt to) is my experience of the improvements brought by using a (suitable – i.e. Shunyata Anaconda CX in my case) aftermarket cord “in-between” the wall and the 300CX’s captive cord (regardless of knowledge to the contrary). In my system and room, the improvements were not subtle and outweighed any drawbacks of the additional length of running the 9ft (?) captive cord plugged into a 6ft. aftermarket cord. Hence my interest to see if anyone else with a captive corded FPB would find similar results by replicating what I did.

I should probably also mention that the wall socket I plug the 300CX (and my other audio equipment) into are PS Audio Power Point Premiers with an Oyaide WPC-Z Carbon Fiber faceplate and aluminium frame, connected directly to an isolated circuit breaker with high current, shielded in-wall wiring between the power socket and the fuse box. I’ve also got three-phase power in my house, with one phase purely dedicated to my music room. You would not think that these things make a difference (and perhaps not everyone may hear an improvement), but my experience is that they are cumulative and have (specifically) taken the sound of my Krell FPB300CX to another level! (I do have another standard wall socket next to the Power Point Premiers, connected to the same point in the fuse box, where I can easily plug in and hear the changes). Hope this gives you a bit more insight into my audio journey with the Krell FPB - Happy Listening!

Audiolabyrinth -

look into Transparent PC.

Agreed. I'm still adding Transparent PC's to the rest of my system with good effect. I now have Transparent between the wall and amp, between the wall and my power conditioner (which powers my source components), and between the power conditioner and my pre. Although a lower level cord is currently on the pre, I want to get a higher level cord for the pre and also add one to my phono amp.