Get the most out of your car stereo's speakers and subwoofers by increasing the power of the sound. Hifonics amplifiers work with Hifonics speakers and subwoofers to increase the bass resonation of music, while maintaining the integrity of the treble lines. You can shop for new and used amplifiers on eBay, where some top-rated sellers also provide free delivery in a timely manner. Hifonics produces several types of amplifiers that include the popular Brutus Elite series and Hifonics Zeus. Known for projecting professional studio-like sound, Brutus Elite Hifonics amps operate on the latest NGSD digital chip technology to provide efficiently powered amplifiers that maintain low internal temperatures. You can only find Hifonics products in specialty audio shops and online at eBay.