In using a guitar amp, it's important to know how to manipulate the amplifier to achieve a number of different effects, including a clean or dirty sound. Learn about using the bass and treble knobs on an amp with help from a professional guitarist in this free video on guitar amps.
A 10 X 13 envelope (must be less than 1/4 inch thick) is considered a flat and costs 80 cents for the first ounce and 17 cents for each fractional ounce after that up to 13 ounces.
FIRST CLASS MAIL. A 6â x 9â envelope with weight up to 1 ounce requires one $.49 first class rate stamp; weight between 1 and 2 ounces will cost $.70; weight between 2 and 3 ounces will cost $.91; and weight between 3.0 and 3.5 ounces will cost $1.12.