Doubtless, anything good will cure any current ills further upstream.
So I tend to agree with the nod to another power source like the 'int' mentinoed previously.
Another thought I have is perhaps an easier speaker to listen to/with. Something in the 84db - 86db range. Some older Phase Techs could work well and what I use in another rig to listen to just such things with myself.
The PC series is the one to look into.
Then too, there are headphones... for much less too.