Aggielaw, if you've only replaced the fuse accessible from the back of the amp, then you might consider opening the lid on your amp to see if there are a few fuses on either rail inside your amp.
On my DNA-2 Rev A amp there were 4 internal fuses (2 per rail/channel) and replacing these fuses provided substantial sonic improvements perhaps because they are in the direct signal path.
-IMO
On my DNA-2 Rev A amp there were 4 internal fuses (2 per rail/channel) and replacing these fuses provided substantial sonic improvements perhaps because they are in the direct signal path.
-IMO