Review on 🎧 Fosi Audio N2 Headphone Amplifier: Portable Amp with 3.5MM Gain & Bass Switch for HiFi Earphones - Powered Dual-Output, Compatible with iPhone, iPod, iPad, MP3, and Computers by Mike Messerly

My Truck Radio I just couldn't get enough volume when playing music on my IPhone. I bought it hoping to change it. These are the enemies that are in high quality sound! What you really need to do is balance the sound between the radio and the amp so your stock speakers don't burn out. The gain and bass switches are excellent and work as I hoped they would. I don't leave the bass on all the time because it's so deep and rich that I worry about my speakers, so I only use it on certain songs and turn the volume down just in case. This is a very well made product. Built to be a quality product and does exactly what it says on the tin! I highly recommend this device for turning up the volume in the car or on headphones, which I've tried and it's so loud you turn it down right away! Great product at any price and fantastic seller! Absolutely AAA!