I do vaguely recall an echo or something when my Pure DAB came on - haven't listened to it for several years as I prefer my choice of music to R4 or anything else these days! It's actually unplugged and heading into the loft - a cheap non-ticking battery clock now tells me the time at night and I am dragged screaming from the clutches of Morpheus by my phone alarm, Pink Floyd's "Any Colour You Like" at 6am, and the rather gentler "Sleepy Shores" by Johnny Pearson at 6.40am as a reminder - better than nagging radio journalists!)