When you need to amplify, filter, add, or otherwise manipulate analog signals you'll certainly want an operational amplifier at your side. This is our favorite hobby op-amp, which we use in our kits!It's DIP package so very easy to work with on a breadboard or perfboard. It has two amplifiers inside. It can run from voltages as low as 2.7V and up to 6V. It has rail to rail input and output, which is a common problem for beginners who don't know how to bias op amps (cheaper op-amps such as the LM358 can't handle a full range of input voltage!)  6 MHz gain...