Don’t bother wasting your money, ESL’s consume so little power you could almost rub a plastic ruler with a wool cloth to generate enough power for them.
And for anyone who says they will filter out more noise, it's only the bias voltage the cord supplies. And if your not convinced just get some cheap snap on ferrite power cord clamps they'll be more effective noise remover anyway, not that you'll hear these as well.
Cheers George