Thanks for all the advice. Now for the testing phase to see if:
A. Is one channel or both
B. A connection issue
C. Issue with router being too close to system
D. Dying tube (with 4 power tubes in each to test)
A. Is one channel or both
B. A connection issue
C. Issue with router being too close to system
D. Dying tube (with 4 power tubes in each to test)