I am using a magic cord power cable from Signal Cable on my Threshold S350e with good results. Inexpensive and maybe worth a try.
Threshold S/500 II power cord suggestions?
I never really believed power cords could make much of a difference until I got this amp. Proper "dressing" of the power cord made significant differnces. Now I'm wondering if can improve upon it further. I'm hoping to keep the costs reasonable. Any suggestions?