Eric,
I haven’t read through this entire string, so maybe this was covered above, but will say that I’ve moved to a new home (new to me) and I’ve been chasing a grounding hum in my system for about a month now. I finally figured out the Parasound was the source of the hum.
Gear and History:
GoldenEar Triton 2+ with AQ Rocket 33 cables, Synergistic Research PCs
Line Magnetic LM-518ia acting as a power amp, PC=AQ HC Hurricane
Pass Labs HPA-1 acting as a 2 channel pre-amp and headphone amp, PC=Kimber PK10
Ch1: Parasound JC3+, PC=stock/Linn Sondek LP12 w/Lingo
Ch2: Auralic Vega DAC/NAD M50.2 media player, both using Shunyata Delta NR
Power: Wall Outlet: AQ NRG Edison, Conditioner: Shunyata PS8 with Delta NR to wall
I had a fixed ground hum regardless of whether I was using the JC or the Digital media. If I ran the LM as an integrated amp and bypassed the Pass Labs the hum would be modest and I could live with it but didn’t like it. I tried putting a cheater on or unplugging a number of different things in my listening room and could not find the root cause of the problem. When I ran sources to the Pass and ran the pass pre-amp out to the LM pre-in the hum was boosted to a level that made it intolerable.
Randomly, while not playing any music and hearing the hum I unplugged the Parasound and the hum completely left the speakers. I then took the cheater plug and put it on the Parasound and plugged it back in. Nothing!
I realize the problem is the power in my new residence but what I don’t understand is why the Parasound is the only component affected and is there anything I can do short of using a cheater to fix the problem.
I haven’t read through this entire string, so maybe this was covered above, but will say that I’ve moved to a new home (new to me) and I’ve been chasing a grounding hum in my system for about a month now. I finally figured out the Parasound was the source of the hum.
Gear and History:
GoldenEar Triton 2+ with AQ Rocket 33 cables, Synergistic Research PCs
Line Magnetic LM-518ia acting as a power amp, PC=AQ HC Hurricane
Pass Labs HPA-1 acting as a 2 channel pre-amp and headphone amp, PC=Kimber PK10
Ch1: Parasound JC3+, PC=stock/Linn Sondek LP12 w/Lingo
Ch2: Auralic Vega DAC/NAD M50.2 media player, both using Shunyata Delta NR
Power: Wall Outlet: AQ NRG Edison, Conditioner: Shunyata PS8 with Delta NR to wall
I had a fixed ground hum regardless of whether I was using the JC or the Digital media. If I ran the LM as an integrated amp and bypassed the Pass Labs the hum would be modest and I could live with it but didn’t like it. I tried putting a cheater on or unplugging a number of different things in my listening room and could not find the root cause of the problem. When I ran sources to the Pass and ran the pass pre-amp out to the LM pre-in the hum was boosted to a level that made it intolerable.
Randomly, while not playing any music and hearing the hum I unplugged the Parasound and the hum completely left the speakers. I then took the cheater plug and put it on the Parasound and plugged it back in. Nothing!
I realize the problem is the power in my new residence but what I don’t understand is why the Parasound is the only component affected and is there anything I can do short of using a cheater to fix the problem.