Option Audio AIR-D1 Sub Amp Mono 1 Channel Class D Subwoofer Amplifier 350w RMS
Couldn't Load Pickup availability
The Option Audio AIR-D1 is an ultra-compact mono Class D subwoofer amplifier delivering 350W RMS at 4 ohms and 580W RMS at 2 ohms, with high-level inputs and auto turn-on for easy integration with a factory radio. It is part of the Option Audio AIR range.
Also in the range: AIR-D4 4-channel amplifier and AIR-D6 6-channel amplifier.
Key specifications
- Channels: 1 (mono), Class D
- RMS power (4 ohms): 350W
- RMS power (2 ohms): 580W
- Minimum impedance: 2 ohms
- Low pass filter: 50Hz–250Hz
- Subsonic filter: 10Hz–50Hz
- Bass boost: 0–12dB
- Inputs: high-level with auto turn-on
- Dimensions (W x H x D): 105.7 x 41.7 x 178mm
AIR-D1 1-channel monoblock subwoofer amplifier
Compact powerhouse for subwoofers: The AIR-D1 is a Class D mono amplifier designed specifically for powering subwoofers. Despite its small size, it delivers strong bass output and a rich low-end foundation in your vehicle.
Ultra-compact design: At just 105.7 x 41.7 x 178mm, this micro amplifier fits almost anywhere — under a seat, behind the glove box, or in a side panel — making it well suited to modern vehicles where space is tight.
Compatible with factory radios: High-level inputs and auto turn-on mean the AIR-D1 integrates directly into existing factory systems. No separate remote cable is needed; the amplifier detects the signal automatically.
High-efficiency Class D technology: The Class D circuit keeps power consumption and heat generation low, ensuring reliable performance without putting unnecessary strain on your vehicle's battery during extended listening sessions.
Precise bass adjustment: The integrated low-pass filter (50Hz–250Hz), subsonic filter (10Hz–50Hz), and 0–12dB bass boost let you tune the AIR-D1 accurately to your subwoofer, keeping the bass clean and well-matched to the rest of your system.
Explore the full range in Option Audio AIR Series.
Specification
| Operating voltage | 10-16V |
|---|---|
| Amplifier class | Class-D power amplifier |
| RMS power (4 Ohm) | 350w |
| RMS power (2 Ohm) | 580w |
| Distortion factor (T.H.D) | <0.2% |
| Min. speaker impedance | 2 Ohm |
| S/N ratio (A-weighted) | >90 dB |
| Frequency response | 10Hz-250Hz |
| Low pass | 50Hz-250Hz |
| Subsonic | 10Hz-50Hz |
| Bass Boost | 0-12dB |
| Fuse protection | 60A |
| Dimensions | (WxHxD) 105.7mm x 41.7mm x 178mm |
What's Included
- OPTION AIR-D1 1-channel amplifier
- Subwoofer level remote control incl. Velcro tape for flexible attachment
- Plug & Play adapter for input signal to cinch
- Retaining/mounting plates incl. 6 screws (mounting on the power amplifier) and 4 screws (mounting in the vehicle)
- Allen key
Option Audio
About the Option Audio AIR-D1
From our tech experts at CEN
A monoblock subwoofer amplifier from Option Audio, Class D, rated at 350w RMS.
Who it suits
Anyone adding a subwoofer that needs proper power behind it.
Our tech experts advise
Matching the amplifier to the speakers matters more than headline watts, and gains want setting with a meter. It needs a fused feed from the battery on the correct cable gauge. Installation is priced per vehicle, so get in touch with your make, model and year and we will confirm what it needs. See car audio installation.
Explore the full Option Audio range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Option Audio
Recommended For You
Discover more top-rated gear, handpicked to go with what you're viewing
Option Audio News & Guides
The latest Option Audio product news, launches and guides from the CEN team in Nottingham.
New at CEN: Option Audio Drive-10Flat — Golf Mk8 Bass, Zero Boot Space Lost
If you drive a VW Golf Mk8 and want real bass without sacrificing the boot, Option Audio built the answer:...
Looking for Installation?
At CEN we take pride in being able to share the quality of our work as well as being able to show what incredible products we have installed week on week.
More from Option Audio
More options from the same range, in stock and ready to go
Save 35% New Release Option Audio AIR-165X 6.5 Inch Coaxial Speakers 50w RMS RRP£199.00£129.00 / Save 35%In stock
Frequently Asked Questions
Q: How do I choose the right amplifier for my speakers or subwoofer?
A: Match the amplifier's RMS output per channel to the RMS handling of your speakers or subwoofer at the same impedance. The Specification tab lists the power figures. If in doubt, contact CEN with your setup and we will recommend a match.
Q: What wiring do I need to install this amplifier?
A: You will need an amplifier wiring kit sized to the amplifier's power draw, typically including power and earth cable, a fuse, RCA leads and a remote wire. CEN stocks complete wiring kits, and the amplifier's fuse rating is the guide to the cable gauge required.
Q: What class of amplifier is this and does it matter?
A: Class D amplifiers are compact and efficient, ideal for subwoofers and modern installs. Class AB designs are traditionally favoured for outright sound quality on mid and high frequencies. The class is listed in the Specification tab where provided.
Q: Will an amplifier work with my factory head unit?
A: Yes, in most cases. If your head unit has no RCA outputs you will need a line output converter to feed the amplifier a clean signal. CEN stocks line output converters and can advise the right one for your vehicle.
Q: Can CEN install this amplifier?
A: Yes. CEN offers professional amplifier installation from our Nottingham premises, including secure mounting, wiring and setup. Contact us to book.
Q: How much power does the Option Audio AIR-D1 deliver?
A: It delivers 350W RMS at 4 ohms and 580W RMS at 2 ohms, with a minimum speaker impedance of 2 ohms.
Q: Does the AIR-D1 need a separate remote turn-on cable?
A: No. It has high-level inputs and an auto turn-on function, so it detects the signal directly from the radio. A Plug & Play adapter for the input signal to RCA is also included.
Q: Is a bass level remote included with the AIR-D1?
A: Yes. A subwoofer level remote control is supplied with Velcro tape for flexible mounting, along with mounting plates, screws and an Allen key.
