zimwig:
I have had a Synergistic Research SR-20 fuse blow on start up on my tube headphone amp. I went to the next larger size and no further problems for the last two years. The fuse is at risk to blow on start up and especially if the amp goes through a quick off and then back on for a quick tube change. If turing a tube amp off give it a few minutes for the tubes to cool before a restart. Hot tubes have less resistance to current flow.
David Pritchard
I have had a Synergistic Research SR-20 fuse blow on start up on my tube headphone amp. I went to the next larger size and no further problems for the last two years. The fuse is at risk to blow on start up and especially if the amp goes through a quick off and then back on for a quick tube change. If turing a tube amp off give it a few minutes for the tubes to cool before a restart. Hot tubes have less resistance to current flow.
David Pritchard