I have been fighting a low ferquency hum in my mic using a keyboard stand mic boom. The speakers on my pa1000 are so strong that when playing loud without external speakers for super small jobs I would get a low frequency hum aka low feedback from my mic.I can almost eq it out but it looses the sound I like to have and I love to run my mic super hot so I can sing soft then back off on the loud parts. I just bought the shure ASSM shock stopper mic clip from amazon and put in on my boom. It's a little snug with my samson Q7 but it fits better with my samson r11 that I like a lot. WELL ALL LOW HUM IS GONE!!! And that is with my regular eq settings. Best $20.00 I ever spent. you can even pat the boom and nothings gets heard over the mic. I can't recommend this holder enough
MEL