I just experienced this [loud buzz] issue I have sent for repairs.
I have had these White DSP’s for almost 10 years with zero issue.

861v8 || 818v3, UHD722, Oppo 105D, DSP8KSE L/R, DSP7200HCSE, DSP5K Rears, DSW, Kaleidescape Cinema One [x2], Roku4K, Apple TV || DSP6K - 2 channel, HD621 || Roon Core / QNAP TVS-872XT || 218 || MacIntosh CS200 || MacIntosh MI128 || DSP3200 L/R