19-May-2015, 12:35
(19-May-2015, 09:28)Saint0 Wrote:(18-May-2015, 12:13)G51 Wrote: Hello, Saint0. Jeff Fritz, Editor of Soundstage.com, once evaluated the expert line (of course not V8.0.0) and said it was dead silent even in his sound-treated listening room. So what comes the problem of the low frequency heart-beat-like rumble and the sudden outburst of very loud noise we heard? Electrical interference from our home electricity network? The later firmware? Or any other factors? Saint0 did you plug the Expert line direct to wall socket or use a power conditioner?
I'm pretty sure power is clean. D250 is connected to PS Audio P5 with Shunyata Z-PC10 power cord, and the P5 goes to MIT 20A in-wall conditioner/surge protector. I'm surprised to hear the low frequency rumble & beating noise, as well as the glitches with SAM 2.0; both happened after the V8.0 update. Unit was clean and dead silent running V7 prior to the update.
I've contacted Devialet, they're supposedly looking into it. This is the first time I had problems with their F/W update.
I don't want to experience noise problem when supposingly playing the most advanced amplifier in the world. Hope Devialet acts fast. All in all, the views towards V8.0.0 are dividing.