.1CH Audio Upgrade Pack

.1CH Subwoofer Upgrade (400W)
- Adds Sub Bass & Amplifier to your existing car stereo system
- Reamplifies your standard speakers for balanced sound
- 400W 4 Channel Amplifier
- 10" Subwoofer
- Stinger Amplifier Wiring Kit
- CSS Fabricated Subwoofer Box
- Computer Calibrated System Tuning with printed report