Eric Bibb is a great artist. I'm envious.
I very much enjoyed the concert more than ever thought possible. What a great artist Eric is..just amazing. He gave me chills several times during the performance. Never thought a single man, with no help from a band could make such great music. Did not hurt that the hall had great acoustics as well, not bad for a little town here in Idaho.
I would not go to separates before I upgraded my cables, if I were you.
You don't need to save much to upgrade that Monster speaker cable. A set of Audioquest Type 4 would blow it away, I know from experience -- and it's biwire ready.
Your interconnects could go to the backup bin too. A very good one for a reasonable price is the Auricle Encore made by Joe Mazzaglia, you can find it here on the 'goN.
Those would let you hear a bit more of Mr. Bibb. I'm a fan too; long may he play.