I solved the problem of the buzzing transformer by replacing it with a 12 volt pulse power supply unit from a dead laptop. Now there is no buzz at all. Got pros: Good sound for such a price (~2300). A convenient remote unit with volume control and a headphone jack (I bought it because of it). Compact speakers. Got cons: The transformer is still humming. The headphone jack is directly connected to the input, without volume control.
Canon Nikon Sony Panasonic FujiFilm Olympus Pentax DSLR Camera Bag, Evecase Large Vintage Canvas Messenger SLR Shoulder Strap Case - Gray
45 Review
Soft Silicone AirPods Case Cover With Visible LED - Compatible With AirPod 2/1 Cases, Keychain Accessory Included - Ideal For Men, Women, Girls, And Boys - Light Pink
37 Review
A Durable And Protective CaseSack For Bose QuietComfort And SoundLink Headphones
41 Review
Canvas Camera Case Bag With Shoulder Strap For DSLR/SLR Cameras - Black, Medium Size By Evecase
30 Review