10There is also the issue that there are a lot more IR interference sources around now than there were in the early 1980s. In particular, the abominable compact fluorescent lamps — perhaps the worst technology ever forced on an unsuspecting public. Fortunately now giving way to LEDs. Modern IR receivers are designed to cope with this. My B225 CD player has had occasional troubles with CFLs, which is another reason to worry about the B251 route.