Introducing the ultimate car audio upgrade bundle! Includes an Alpine KTA-450 4-Channel Power Pack Amplifier which boasts a Dynamic Peak Power of 45W RMS x 4 at 2 or 4 Ohms, along with an Alpine S2-S65 6.5" Coaxial Speaker Set and an Alpine S2-S40 4" Coaxial Speaker Set. The KTA-450's compact size of 7”W x 3.5”H x 1.25”D allows versatile installation options in tight spaces like glove boxes or behind radios. Featuring Class D amplifier circuitry and Dynamic Peak Power technology for enhanced, dynamic sound performance. The S2-S65 and S2-S40 offer Hi-Res Audio Certification, reproducing up to 40kHz frequency response for a more accurate and natural sound at an entry-level price point. Crafted with innovative materials like Poly Propylene, Glass Fiber, and Mica Cone for lightweight construction, high output, and low distortion. Enjoy powerful and accurate bass notes with Alpine's HAMR Surround technology integrated into the speaker design. The S2-S65 set features 6.5" woofers and 1" coaxial tweeters with a maximum peak power of 240W, while the S2-S40 set comes with 4" woofers and 3/4" coaxial tweeters delivering a maximum peak power of 140W. Elevate your car audio experience with this high-quality bundle by Alpine.