| Well, if it's not fret buzz on the low B from a poor setup, or an overly aggressive technique, and sounds "fuzzy," I'd suspect that you're overdriving the channel.
The fader, assuming the Tascam behaves like most consoles and DAW's, works after the signal hits the input. In other words, pulling down the fader control, which is what I assume you're doing, won't prevent the front end of the channel from clipping, only the output bus. I would try reducing the input gain (ie record at a lower level, or reduce the waveform in post) to remove the clipping, and that will allow you to bring the fader up and get more of the signal into the output bus.
If you can mix the bass on everything but that string, you might also need to consider compressing and EQ'ing to reduce the dynamic between the strings. If that's not desirable, you may have to physically play that string differently to make it work.
__________________ FS: DBX 286A Channel Strip (FS thread coming soon!) |