I had major problem with transformer hum that lasted for years, this along with over voltage issue(124-126v). Never could get rid of transformer hum, bucking transformer for the over voltage. Suddenly one day I come home no more transformer hum, voltage down to 119-121v, this has remained for years now. Seems electrical grid was finally repaired.
DC blockers - what's your experience
Just viewed a video about the AudioLab DC blocker. Then watched Paul from PS Audio explain how it works and now I’m intrigued. Anyone with insite?.