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

I have used many times in the past after market power cords with a Krell amp and result with a sound that was worse than the stock cord from Krell!, I am getting ready to send A Krell 700cx back to Krell to be renewed for me to last!, The amp is only 8 years old!, It came hard wired with a snake of a stock power cord!, My question is will a retail $5,000.00 Taralabs cobalt A/C power cord sound awsome with this amp?, My friend Jmcgrogan2 is telling me to get Krell to put an IEC input on the amp so I can use an after market power cord, I have extensive experience with Taralabs cables and know them very well!, However,I have never used a cobalt on a Krell 700 cx!, Will this work?, who has done this?, what was the sound out come?, Thankyou!