Power cord for CJ MF2500A


I have a Conrad Johnson MF2500A amp and it sounds really good. My only problem is the power cord is about six feet and it won't reach my wall outlet so I have to plug it into a power strip. Has anyone ever had an IEC bracket installed to allow for an after market power cord? If so, was there any improvement in sound? I'm more concerned with the ability to plug directly into the wall outlet than I am about using a different power cord. The supplied power cord works quite well and I have read that Conrad Johnson spent time developing the right cord to go with this amp.
jimmymac

Showing 3 responses by shum3s

I installed an IEC in my 2500A over 5 years ago and it was not difficult. Remove the top cover. Once removed there is a power circuit board that is held by four screws. Once removed simply move out of the way. (there is enough lead wires to reveal the capture cord underneath the power board)
I then took a IEC and traced the outside shape( after cutting the cord) Took a drill bit that was the diameter of the top and bottom of the IEC, then I took a file and filed out the shape of the IEC. Fitted the plug flush against the outside of the back panel, aligned it straight and drilled two small holes to fasten the plug. Once the IEC new opening is completed,pull the excess three wire opening,white(neutral)green(ground) and black (hot). Make sure to maintain polarity, on the back of the IEC

IEC one of the prongs is mark with the letter N for neutral, black wire goes on the opposite side and the middle prong is ground (green) When the three wires are soldered. Fit the plug on the panel using two screws to fasten the plug securely.

I hope you will find this helpful. I am glad I performed this small operation, it provides flexibility for trying after market power cords. Good luck. Sam



I installed an IEC in my 2500A over 5 years ago and it was not difficult. Remove the top cover. Once removed there is a power circuit board that is held by four screws. Once removed simply move out of the way. (there is enough lead wires to reveal the capture cord underneath the power board)
I then took a IEC and traced the outside shape( after cutting the cord) Took a drill bit that was the diameter of the top and bottom of the IEC, then I took a file and filed out the shape of the IEC. Fit the plug flush against the outside of the back panel, aligned it straight and drilled two small holes to fasten the plug. Once the IEC new opening completed,pull the excess three wire opening,white(neutral)green(ground)and black (hot).Make sure to maintain polarity, on the back of the IEC.

IEC one of the prongs is mark with the letter N for neutral, black wire goes on the opposite side and the middle prong is ground (green) When the three wires are soldered. Fit the plug on the panel using two screws to fasten the plug securely.

I hope you will find this helpful. I am glad I performed this small operation, it provides flexibility for trying after market power cords. Good luck. Sam



I am must say that I really could not detect any audible difference after I installed the IEC socket in the amp. What motivated me to do this in the first place, Is that I was told that I would get 20 percent more improvement by using a aftermarket cord from my dealer. I cannot verify from my listening experience that there was a 20 percent improvement. But I do not regret from doing the modification; it was fun doing it and it dose give me more options to experiment. Sam