I thought I'd gotten a good base guitar, you know one you can get cheap and make it scream as you get the money.  And I had received exactly what I thought.  A well made epiphone in need of some minor tweaks......so I bought new pups and new grover tuners.  I haven't installed them yet because when I bought a digitech rp360,,,,,well didn't need too,  It screams on its own now...crystal clear.  no muddy tones.  I am in love with this guitar.  So if you have bad sound system a good guitar sounds bad.  A good sound system and a mediocre guitar will scream.  Get both  you won't regret it.