A free app for a Thursday. EQ Free is a free version of Equalizer. Here’s the app’s description:
Free version of the popular Equalizer app. Equalizer your iPod Library music using a 7 band graphic equalizer. The free version showcases the use of the 7 band equalizer to adjust your music to your surroundings. You can select a song, play it and adjust the seven bands in real time.
Little changes usually go a long way as the bands are a full 12 dB to – 12 dB.
If you boost certain frequencies too much, you might experience clipping and distortion. To prevent these artifacts of digital music, make sure to turn the global volume (green slider) down until the distortion disappears.