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.
$2.61 and up. Swipe right to see entire table. You can attach stamps to large envelopes and small packages to be sent through First Class Mail as long as youâve met USPSâs weight restrictions. It costs $0.98 to send the first ounce of a large envelope and $2.61 and up for the first 3 ounces of a small package.