I have my new H8000FW, arrived before xmax, I started to use it 2016 and about five times now there has been a loud pop from the h8000fw that put my desk control 24, and apollo, meters into the red and cause my adams s3a overload protecion to cut in,  pop it is less than 200ms duration. 

today i fed dsp A into B then out. was fine 10 hours then pop or bang

it did it just now

it does not seem program dependant before it did it with dsp  A n B running in parrallel

internal clock

no midi, fire wire, or digi  I/o connected.

i have just one analogue input  connected as I learn the unit.  This one fed from my spl preamp ,

analogue outputs connected 1 and 2 that is all thats connected at this point

the surge is not caused by the preamp as this has a parrellel out going to another apollo PTools  channel that did not peak

it is not dependant on an audio source being fed to the h8000fw

running mains through on a quality APC 1500 ups unit

WHEN IT DOES IT ALL THE H8000FW INPUT CHANNEL meters LIGHT UP TO MAX ON EVERY CHANNEL (remember only hard input connected  is analoguechannel 1)

THAT IS THE WHOLE INPUT METER MATRIX ILUMINATES ALONG WITH THE POP EVERY LED

 

 the unit has to date done it after running in excess of 2 hours

 

new unit, in studio, so no physical trauma pretty much done it since deliver 5 weeks back

 

Love the sounds, front panel navigation not as bad as some will have you believe (but I did grow up with 8 menu deep Rolands and Korgs)