If none of the silicone bits that come with your in-ears fit your ear canal: get tips that fit to your ear like memory foam options. This might sound like a cop-out, but it’s true: how your in-ears fit has a massive impact on the sound you get out of them. While in-ears don’t always give you stellar results, but nine times out of ten if they sound really bad it’s because your in-ears don’t fit. Just be sure to look up the specs on whatever amp you’re buying first, and make sure the “output impedance” number in the specs is less than 1/8th the impedance of the headphones you’re using for best results. If you love your current headphones and want to amplify their signal, you can pick up any one of a number of portable amps like the FiiO A1 to help you out. Most headphones designed for mobile use will hover around 16Ω or 32Ω, which is very easy for your smartphone to handle. The higher that number is, the more it resists current, and the quieter it can get with the same output. Search for the “impedance” spec and take note of the number followed by the Ω symbol. So how can you tell if you need an amp? Click on over to the specifications pages of the products you’re looking at. Though most new headphones will never have this issue because they’re designed to work more efficiently with smartphones, planar magnetic and other high-current cans will still need an amp of some sort. If you’re absolutely sure your headphones aren’t broken, you may need an amp for your headphones. Most headphones nowadays are a lot more power efficient, so this is a very rare problem. But it’s something you should know how to rule out if something’s amiss. Using an amplifier like this one can properly run power-hungry headphones.

Make bluetooth headphones louder