Buzzing noise.

Jea48, Almarg and others... can you please advise about the power up/down sequence in my particular case? Frankly I haven't given much thought to which component to turn on or off first, etc. My integrated (Musical Fidelity M6si) has a power standby mode and my speakers (Golden Ear Triton One) have their own amp and is of course connected to A/C. I keep both the amp and speakers on separate power strips and the strips have their own power on/off switch. When powering the speakers off I wait until their internal amp goes into standby and then power down via power strip. In the case of the amp I've been powering it down with its own power switch and then powering down at its power strip. Point here is I haven't been paying attention to the M6Si in relation to the speakers, but based on what I'm reading herein it would still be advisable when powering down to go Amp first then speakers and vice-versa on the power up. But does this really "matter" in my case?

Thanks as always Al! And yes, you're right in that I would have noticed (heard) something undesirable if there were an issue. I haven't, nevertheless I'll follow your recommendation for power on/off.