Hi all, Thank you in advance if anyone can assist me. I have a brand new Leak 230 amplifier, which has a mind of it's own. Whether I am streaming via bluetooth or playing albums through my turntable (vintage Philips 212), the volume (and the volume dial) just slowly turns down to zero over about 10 seconds. It doesn't happen all the time - only half the time. Randomly. Anyone had this happen before and what's happening? Do I return to manufacturer? Thank you.