I'm wondering, when you do fast playing volume swells such as Echo Etude, do you have to put the volume knob all the way down to 0 (or 1) , so that it doesn't sound or can you let it sound soft?
you can do whatever you like, my man. If it hits 0, then it will sound most quiet. If it hits 0.00001 through to 2 it will sound very quiet. The variation will make it sound real. All of the numbers you can reach on the volume knob are aloud, however.

"I don't have an instrument, I don't have a great voice, I just have some nice clothes maybe." paul rutherford