“I purchased the ZMD-3W micro-dot for installation in my PS-Audio BHK Signature Preamplifier.  I installed 50 dots on various components including power transistors, capacitors, tubes and IEC power connector. The improvement in sound was like adding a new component to my system.  Music was much more detailed and refined and the music seemed to carry much more energy and punch.  I also added 50 dots to my PS-Audio Direct Stream DAC.  The improvement in sound quality was there, but more subtle than when used on the pre-amp.   I would highly recommend the ZMD-3 dots, especially on analog components.”

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