I have been using some of ddk's Ching Cheng power cords on my front end gear for the last six or so months. They work well, have a nice tight fit, never come loose, and sounded better than the other cords to which I directly compared them. Over the years, I have tried about five audiophile power cords, plus the stock cords that came with the gear. Some of these were quite expensive.
Each of my Pass Labs mono block amplifiers is connected fairly directly to a dedicated 20 amp circuit on the panel via JPS Labs In Wall cable going through a hole in the floor and terminated by a Furutech IEC connector. This bypasses all outlets. I have been using this DIY power cord for 15 or so years.
Last night I decided to hook up my last two Ching Cheng power cords to my amps to see if the system would sound any different. I was not expecting much. One amp is near a standard house outlet, but I had to use a cheap extension cord to get the other amp's power cord to reach an outlet.
I heard cleaner high frequencies, a more balanced frequency response, and a more natural bass. Wooden string instruments sounded more hollow. It was a nice little improvement until I can get my electrician here to install four dedicated circuits and industrial grade isolated ground duplex receptacles. He plans to use 10 gauge stranded wire in metal casing.
This morning I brought in a much thicker extension cord with two plugs in the end. I hooked up the two amps on this one extension cord plugged into an open dedicated outlet which I had never used before. I was not prepared for what I heard. There was greater bass extension, more clarity, and much better dynamics. Overall, the sound was just more natural with nothing calling attention to itself. And this is having both amps on one circuit via an extension cord. This improvement was across genres and I heard nothing negative with these cords.
It seems people have had very different impressions of the Ching Cheng power cords in their systems. They are incredibly inexpensive, but very effective in some systems. To me, they sound very neutral, not adding any obvious colorations. The music just comes through. I hear no "hyped" sound or artifacts as I have with so many other power cords. I am now wondering why I did not notice the colorations of my previous JPS Labs cable and Furutech IEC connector which I had assumed would be pretty neutral being such a direct connection to the panel. This proved not to be the case.
These Ching Cheng power cords are another positive addition to my growing list of recent experiments. More gratitude to ddk for making this suggestion to me.