I've gotten in the habit of practicing without an amp because my amp is sitting in the garage (no room inside) and it's Florida in the middle of the summer. I went out there to go plug up yesterday. My bass (an Ernie Ball Stingray 5 I got about a month ago) was sounding awesome, but I realized it was making a lot of buzzing. The action is a little high and I will have it lowered when I buy new strings. For the other strings, specifically the low E (which I often downtune), I grow out my fingernails and hit it hard for a click sound sometimes. It's not a problem rolling off the energy and getting a smoother sound. However, with the low B, it's hard to get it at the same volume without making it click. I've looked at my fretting hand pressure some, and that helped. What else would you suggest? Play near the bridge? Try a thumb technique? I'm looking for a cleaner, fatter sound on that string.