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.
These pre-designated envelopes and boxes allow you to put as much as will fit into the box for one flat rate. Flat rate envelopes start at $4.95 with sizes at 12-1/2 by 9-1/2. The $4.95 price exists for envelopes holding legal-sized documents. A small box measuring 8-5/8 by 5-3/8 by 1-5/8 is $5.20.