DAC drops out when Furnace starts or stops. HELP


Every time my furnace or water heater (gas, power vented) kicks on or off my DAC drops out momentarily. My audio system, furnace and water heater are all on separate dedicated ac lines. My AC panel was updated to a 200 amp service some years back.
I checked all connections from the panel to each device and internally checked all electrical connections in the furnace and water heater, verifying proper hot, neutral and ground.
I checked and tightened all wires in the service entrance panel.
Has this happened to anyone else? If so what did you do to correct it?
Any help will be appreciated.
jadedavid

Showing 1 response by loanofficer1

Hope there are still audiophiles smarter than me still interested in commenting about dropouts because I ran into a similar problem for which I need help with when I introduced the Yggdrasil dac into my system running off a Grover Huffman digital cable (as recommended in this stream) connected to the digital out of my CD player.  I was hearing occasional dropouts which I subsequently was able, thru experimentation, to duplicate/induce by switching on or off a nearby fluorescent fixture or a clothes dryer in an adjacent room. Incandescent switches in the room have no affect. 
Not clear to me yet whether these components share a conmmom AC line.  I have tried several lesser cost different digital cables both coax and xlr with no difference. And, oh yes, the CD player need not be spinning. I can see the sample rate indicators on the Yggdrasil flashing off momentarily when I hit the fluorescent switch