Had my RS150 a few days now and I love the sound quality but I have two really annoying problems…
Firstly this is my system, RS150/Parasound A21Plus Power amp/PMC 25.23i speakers/SVS 2000pro Sub/Linn Turntable.
When I switch various inputs I often get a pop through the speakers.
Also, and more worrying, when I switch the unit off I get a loud very low frequency pulse through the system. Its very low and only comes through the sub and that is set to only deliver below 50 hertz. I switch the sub and amp into standby but the sub takes ages to power down so although its switched off it still thumps. And its like an earthquake!!
Anyone have any ideas?
Hopefully this will be seen by the right people 
My dealer is also aware.
I guess I could leave the 150 powered on permanent I suppose, but this shouldn’t be happening on a premium £3800 product.
Dear Jukemark,
Please, record 2 types of noise and send it to me for solve your problem.
Best Regards,
rosecaptain.
I can also confirm the pops on my RS150 when changing the analog inputs for example or changing the output level on the balanced connectors
Thanks, Im glad its not just me!