I've had this happen but it's inconsistent. Half the time there is no sound cut, and half the time there is.
BOLT(4TB)x2/Roamio Pro (5TB Red)
TiVo Mini x4
Roamio Basic(1TB Red)/Roamio Basic refurb(stock drive)
53TB unRAID2--41TB unRAID3--35TB unRAID1a