Modern Connectivity
Seamless Apple CarPlay® and Android Auto™ for navigation, music, and calls.
"Fit perfectly and worked exactly as expected — support was excellent."
Alpine HDP-D90
Upgrade Your Vehicle With Confidence. This Is Built to Fit, Perform, and Last
Real installer support before and after purchase
Price Match Guarantee
Full Manufacturer 2 Years Warranty
Free 30-Day Returns
Check Compatibility
2 left in stock
Ships within 1-3 days
Authorized Dealer Guaranteed
The Alpine HDP-D90 is a high-performance 12-channel digital signal processor amplifier designed for audiophiles seeking studio-quality sound in their vehicles. As part of the Alpine Status series, it combines advanced DSP capabilities with powerful amplification to deliver an immersive listening experience. With Hi-Res Audio playback, extensive tuning options, and flexible input/output configurations, the HDP-D90 is engineered for precision and versatility.
Key Features
| Feature | Details |
|---|---|
| Audio Processing | Hi-Res Audio Playback (192kHz/24Bit); Internal Sampling Rate: 192kHz/64Bit; Ultra-wide bandwidth: 10Hz–110kHz |
| Amplifier Output | Channels 1–8: 50W RMS @ 4Ω; Channels 9–12: 80W RMS @ 4Ω; Channels 9–12 (bridged): 160W RMS x 2 @ 4Ω |
| Inputs | 12-channel high-level (up to 26V RMS); 2-channel RCA; Optical (SPDIF); Coaxial (Digital); Bluetooth audio streaming with included external module |
| Outputs | 10-channel RCA preamp outputs; 12-channel high-level amplified outputs |
| Equalization | 31-band parametric or graphic EQ per channel; Q: 0.404 ~ 28.85; Gain: -12.0dB ~ +12.0 dB |
| Crossovers | High-pass, low-pass, and band-pass filters per channel; Crossover points: 20Hz – 20kHz; Slopes: 12dB to 48dB/octave; Filter types: Butterworth, Linkwitz-Riley, Bessel |
| Time Correction | Up to 20ms delay per channel; Delay units: milliseconds, centimeters, or inches; Phase adjustment: 0° or 180° per channel |
| Control Interface | Wireless tuning via smartphone (iOS/Android) and PC; Optional wired LCD remote controller for volume, preset storage/recall, subwoofer level, and source selection |
| Design | Copper-plated chassis for enhanced signal-to-noise ratio (>110dB) and minimized distortion (THD: <0.001%) |
What’s in the Box
| Alpine HDP-D90 DSP Amplifier |
| 6" 26-Pin Input Harness |
| Bluetooth Module with Attached 6" Cable (RJ-45) |
| 5' USB Cable (Type-A to Type-B) |
| 2 Mounting Brackets |
| Four 3/4" Screws |
| Four 6mm Machine Screws |
| 4 Spare Speaker Output Set-Screws |
| 1/8" Brass Plug |
| Quick Reference Guide |
| Guide Addendum |
| Warranty Information |
| Registration Information |
- Ships within 1–3 business days from our warehouse
- Tracking included with every order
- Free 30-day returns if it doesn’t work for your setup
- 2-year manufacturer warranty
- Authorized dealer guarantee
- Real installer-backed support before and after purchase
Alpine HDP-D90
Sale price$1,999.95
Why This Upgrade Makes Daily Driving Better
Ease of Use & Safety
Hands-free control reduces distraction and frustrationwhile driving.
Expandable by Design
Add backup cameras, better speakers, amps, or subsanytime.
FITMENT & INSTALLATION MADE SIMPLE
WHAT VEHICLES IT WORKS WITH
FIND THE RIGHT PRODUCT FOR YOUR EXACT VEHICLE
We verify compatibility before you buy, no guesswork.
DIY FRIENDLY IF:
- You're comfortable with basic tools
- You follow provided instructions
PROFESSIONAL INSTALL RECOMMENDED IF:
- Your vehicle requires dash kits or wiring adapters
- You want a turnkey experience
INSTALLATION CREDIT & SUPPORT:
- $75 Installation Credit when purchased online
- Speak to real installers before you buy
- Bring it into one of our locations for install
40 Years of Installation Experience
Tens of Thousands of Installs Completed
Authorized Dealer Full Warranties
Why Buying This Here Is Safer Than Anywhere Else
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Authorized Products
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Easy Returns
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Physical stores & real installers
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FREQUENTLY ASKED QUESTIONS
FREQUENTLY ASKED QUESTIONS
How do I know this stereo or speaker will fit my car?
Select your year, make, and model using the Vehicle Fit Guide at the top of the page. You’ll only see products that are compatible with your exact vehicle setup.
What happens if I order something that doesn’t fit?
You can return or exchange it within 30 days. We’ll help you identify the correct part for your vehicle so you don’t have to guess again.
Are these products brand new and covered by warranty?
Yes — all products are brand new, authentic, and sold as an authorized dealer, which means they include a full manufacturer warranty.
Can you install this for me, or do I need to do it myself?
You can do either. Install it yourself, or use your $75 installation credit at our shop and have it professionally installed by our team.
What if I don’t know what to choose for my car?
Tell us your vehicle and what you want to improve (sound, bass, CarPlay, etc.). We’ll recommend the exact products that fit your car and your budget.
Free shipping
Free Shipping to the Lower 48 States
Customer service
Our Customer support and sales experts are always available to help
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