The highest in-class audio performance at an accessible price point makes Alpine Status the ultimate sound upgrade. Using engineering and design from the Ultra Hi-Res AlpineF#1Status System, the HDA-V90 features exceptional tooling and rich build quality for the best possible sound reproduction. The HDA-V90 was intentionally designed to provide impressive power output to the system while ensuring the purest audio performance. The amplifier’s wide dynamic range capability provides impressive output in a compact chassis that fits most vehicle applications. The HDA-M80 features a high-efficiency digital circuit design that ensures ultra-low distortion levels for precise sound reproduction and superb sound quality. Intentional designs, like a copper-plated chassis and black circuit board, bring the signal-to-noise ratio up to 87dB and minimize noise and distortion during playback for complete music fidelity that’s true to the original source. The amplifier features Alpine’s dual negative feedback control circuit to improve linearity for the most accurate sound amplification. This technology also stabilizes the amplifier output while driving the speakers for ultimate reliability. The HDA-V90 features Alpine’s quick-connect power and speaker connectors for quick and safe installation. The one-sided terminal layout and top-panel sound controls give the user quick access to controls on the amplifier. The Alpine Status System is sold separately and can be used to build a custom sound system. Three sets of true 4V preamp outputs are included to add additional amplifiers if more power is needed. For best results, install the complete Alpine Status system together as a full system to achieve the highest in-class audio performance only second to the Ultra High-Resolution AlpineF#1System. Hi-Res Audio Playback (192kHz/24Bit) 5-Channel Amplifier High-Efficiency Digital Circuit Design Alpine’s Dual Negative Feedback Control Circuit High Bandwidth Amplifier Alpine’s Premium Class D Circuit Design Copper-plated chassis Black circuit board One-sided terminal layout Top panel sound controls Quick connect power and speaker terminals Optional Remote bass knob compatible (requires RUX-KNOB.2 or RUX-H01, sold separately) HDA-V90 5-Channel Amplifier Owner’s manual “Birth sheet” that certifies by measurement the actual power of the amplifier in the box 4 Screws for amplifier mounting to the vehicle 2pcs. Mount bracket w/ 4 Screws for attachment to the amplifier 3pcs. Allen wrench for amplifier connection & installation – Sizes: 2mm/2.5mm/4mm 1pc. Quick connector block for Power/Ground/Remote wires 3pcs. Quick connector block for Speaker wires Dimensions: 11.4375” x 7.5” x 2.125” Power Rating: (14.4V, ≤1.0% THD+N) 75W x 4 + 300W x 1 @ 4Ω 100W x 4 + 500W x 1 @ 2Ω Bridged: 200W x 2 @ 4Ω (ch1/2, ch3/4 only) THD+N: 0.02% (10W into 4ohm) S/N Ratio: 87dB (1W into 4ohm) Frequency response: 8-60kHz (-3dB) Damping factor: 500 (ch1/2/3/4), 1000 (subwoofer) Selectable input level – HI/LO Selectable 2/4/6ch input Variable High pass / Low pass crossover Variable Subsonic filter (subwoofer) Bass EQ (0 to +12dB, Variable) Auto-turn on with remote sensing