As a long term customer of Elite Mark recommended a new brand product to there portfolio Puritan Audio & try their PSM136 mains cleanser. Having let it run in for a few days all I can say is it’s remarkable piece of kit, as it has removed all the fuzziness leaving a completely natural organic sound with all the instruments having much more air around them. The increase in clarity & widened sound stage in my humble opinion is equivalent to either a speaker or pre amp upgrade no question. For the modest outlay compared with some upgrades it is without hesitation an absolute must for any quality Hi Fi system as the return in performance across the board is staggering. Highly recommended to anyone searching for that Audio Nirvana?