Modern Connectivity
Seamless Apple CarPlay® and Android Auto™ for navigation, music, and calls.
"Fit perfectly and worked exactly as expected — support was excellent."
Alpine R-A75M
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
Discontinued
Authorized Dealer Guaranteed
Alpine R-A75M R-Series Mono Subwoofer Amplifier
The Alpine R-A75M is a high-performance mono Class D amplifier engineered to deliver powerful and precise bass reproduction. As part of Alpine's R-Series, this amplifier offers 750 watts RMS at 2 ohms, ensuring your subwoofer receives clean and efficient power. Its compact design and advanced features make it an ideal choice for audiophiles seeking to enhance their car audio system with deep, impactful bass.
| Key Features | |
|---|---|
| Power Output | 500W RMS x 1 @ 4Ω; 750W RMS x 1 @ 2Ω |
| Amplifier Class | Class D |
| Frequency Response | 10Hz – 400Hz |
| Signal-to-Noise Ratio | >85dB (1W into 4Ω) |
| THD+N | <0.02% (1W into 4Ω) |
| Crossover Controls | Variable low-pass filter (50Hz – 400Hz, 24dB/octave); Variable subsonic filter (8Hz – 40Hz, 24dB/octave) |
| Bass Boost | 0–12dB at 50Hz |
| Input Sensitivity | Low level: 0.1 – 4V; High level: 0.4 – 10V |
| Optional Remote | Compatible with Alpine RUX-KNOB.2 (sold separately) |
| Dimensions (W x H x D) | 10.75" x 2.13" x 10" |
| Weight | 7 lbs, 3 oz |
| What’s in the Box |
|---|
| 1 × Alpine R-A75M Mono Amplifier |
| 2 × 40A ATO Fuses (installed) |
| 4 × Mounting Screws |
| 3 × Allen Wrenches (2mm, 2.5mm, 3mm) |
| 1 × Owner’s Manual |
| 1 × Alpine Verification Certificate (“Birth Sheet”) |
| 1 × Warranty Information Sheet |
| 1 × Installation Guide |
| 1 × Alpine Registration Card |
| Technical Specifications | |
|---|---|
| Model Number | R-A75M |
| Channels | 1 (Mono) |
| Power Output @ 4Ω | 500W RMS x 1 |
| Power Output @ 2Ω | 750W RMS x 1 |
| Frequency Response | 10Hz – 400Hz |
| Signal-to-Noise Ratio | >85dB (1W into 4Ω) |
| THD+N | <0.02% (1W into 4Ω) |
| Input Sensitivity | Low level: 0.1 – 4V; High level: 0.4 – 10V |
| Crossover Controls | Variable LPF (50Hz – 400Hz, 24dB/octave); Variable subsonic filter (8Hz – 40Hz, 24dB/octave) |
| Bass Boost | 0–12dB at 50Hz |
| Fuse Rating | 40A × 2 |
| Recommended Wiring | 4 AWG power and ground leads |
| Dimensions (W x H x D) | 10.75" x 2.13" x 10" |
| Weight | 7 lbs, 3 oz |
| Optional Remote | Alpine RUX-KNOB.2 (sold separately) |
- 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 R-A75M
Sale price$599.95
Why This Upgrade Makes Daily Driving Better
Ease of Use & Safety
Hands-free control reduces distraction and frustration while driving.
Expandable by Design
Add backup cameras, better speakers, amps, or subs anytime.
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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Verified Vehicle Fit
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Installer Support
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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
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Our Customer support and sales experts are always available to help
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