Stereo amplifiers (or “amps” for short) are a necessary piece of equipment if you plan on building your own sound system. The amplifier is the hub for all of your components like the speakers, CD player or turntable. The amount of channels an amp has decides how many components you can hook up to it. Usually, the more channels an amplifier has, the more expensive it will be, too. That’s why you should make sure to shop around to see if you’re getting the best deal on the right piece of equipment. We list offers from top merchants like eBay, Amazon and John Lewis so you can be sure you’re getting the best prices with a trusted merchant. To help you make the best choice, we have created handy buyer guides which will let you know what features to look out for. Each listing also includes full product details, plus we have expert reviews which give you detailed and unbiased information. Once you've found a product you like, you can use our free price comparison feature to hunt for the best price for it – so easy!