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.
1 Using a 8.5x11 envelope is not allowed for the letter rate. 2  Cost: $0.93 (2-ounce letter rate plus 22-cent non-machinable surcharge): 3  Wrap the CD and 1 to 2 pieces of non-corrugated (cereal box-type) cardboard with the SwapaCD Wrapper. Using a 8.5x11 envelope is not allowed for the letter rate. 2  Cost: $0.93 (2-ounce letter rate plus 22-cent non-machinable surcharge): 3  Wrap the CD and 1 to 2 pieces of non-corrugated (cereal box-type) cardboard with the SwapaCD Wrapper.