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In Phase Car Audio InPhase IPA2001D 1 Ohm Stable 2000 Watts RMS MonIPA2001D
£199.99 Save £150.00  was:£349.99
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5 Stars (22)

In Phase Car Audio InPhase IPA2001D 1 Ohm Stable 2000 Watts RMS Monoblock with Subsonic Filter

Save: £150.00 (43%)  rrp: £349.99
5 Stars
22 Review(s) / write a review
Quickfind Code - 23409
Quick Summary:

InPhase amplifiers are made to rock your world. With great muscle also comes refinement. Advanced features such as bass boost, fully variable zero to 60Hz subsonic filters and crossover network.

Save: £150.00 (43%)
rrp: £349.99
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On Orders Over £300

  • COVID-19 We are open online & shipping orders during the COVID-19 pandemic
  • Free Car Air Freshener with every order Free Car Air Freshener with every order
  • Next Day Delivery available on all orders before 5pm Next Day Delivery available on all orders before 5pm
  • Easy Returns Easy Returns
  • 1 Year Easy Warranty 1 Year Easy Warranty

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Key Features

InPhase 1 Ohm Stable 2000 Watts RMS Monoblock with Subsonic Filter - In Phase Car Audio IPA2001D

The New InPhase IPA range of amplifiers from InPhase is possibly one of the best car amplifiers available today. Car amplifiers are the heart of a system and need be of the best quality available for your budget. All Inphase IPA car amplifiers are hand assembled and go through 35 different check points to ensure you get the best possible car amplifier today. 

With two ohm stable designs, trimode capability and clever protection circuits, these hand-built powerhouses will take anything you throw at them. Massive heat sinks with a high surface area to volume ratios and cast end caps to hide the wiring connections and keep things controlled – helped by forced air cooling on the real bass monsters.

British Design 

All In Phase amps are designed in the UK utilising over 30 years of audio experience to create a sound that is right for you. 

Improved Circuit Design

To prevent circuit shutdown, Juice's new digital amplifier circuit, senses its internal temperature and automatically moderates input level accordingly. Stable, durable circuitry lessens the risk of high input power for the unit to achieve 2 Ω connection. This design enhances the flexibility to connect multiple subwoofers to a system.

Variable Low Pass Filter

For extra flexibility, a variable LPF makes audio frequency more adjustable according to subwoofer characteristics and personal listening preferences. The LPF is adjustable from 30 Hz to 250 Hz.


Download image of In Phase Car Audio IPA2001D Click here for Image of In Phase Car Audio IPA2001D
Technical Specification
  • 800w RMS x1 @ 4 ohms
  • 1200w RMS x1 @ 2 ohms
  • 2000w RMS x1 @ 1 ohms
  • 4000 Watts Max Power
  • Regulated power supply
  • MOSFET power supply
  • Oversize Power Tranformer
  • Bipolar Output devices
  • Dimensions (L x W x H) 320mm x 250mm x 55.5mm
  • Variable gain adjustment
  • Variable cross over (high/low pass)
  • Thermal protection
  • Overload protection
  • 1 ohms Stable
  • Variable Subsonic Filter 20Hz- 50Hz
  • Low pass filter frequency 50Hz - 250Hz
  • Digital Subwoofer Level Control
  • Bass Boost
Related Accessories
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Customer reviews

So powerful
Matt on 12/05/2020 5 star rating

I bought this amp to run my Alpine swr12 woofers. I had two subs. This thing is mental. I was using a old skool Alpine MRV 1507 which wad £600 in the day and this amp just nailed it. This bby can drive nails!! Its so powerful my subs soon gave up. So purchased the Trex 12. Now I'm rocking. Very impressed with this amp, planning to buy a second one.

Ben on 25/09/2019 5 star rating

Picked this bad boy up from your tooting shop to run my twin pioneer subwoofers. Wicked amplifier with loads of power.Good value for money. Highly recommend!!!

Newton on 06/03/2019 5 star rating

I spent my last few pounds on buying the IPA 2000 Watts in phase amplifier and I have no regrets am giving this amplifier a 10 star I can’t see no amplifier to match up to this one

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Questions/Answers About This Product
  • Question: 26 May 2020
    Car: Ford Fiesta - 2005>

    What sub and box would you pair with this


    This depends on the space you have in your Ford Fiesta 2005 and what you are trying to acheive with this sub and box.

    If you are after big bass have a look at the following

    Trex12 3000 watts subwoofer with Bass Box

    Found Useful? Yes 

  • Question: 23 April 2020
    Thanks for getting back to me and I think you have got me mixed up with another person as I did order a brand new ipa2001d amp not used and will be expecting a new one that what I paid for

    Oh Sorry, if you ordered a new one thats what will arrive.

    Found Useful? Yes 

  • Question: 23 April 2020
    Hi there I am wondering if you have got these in stock yet as I'm still waiting for mine as I paid for it on the 13th many thanks hope to hear back from you

    The In Phase Amps are due in on Friday and we have updraded your B stock amp to a brand new one. Dont forget your wires

    JWTRU42PS 4 Gauge Four Channel Amplifier Wiring Kit

    Found Useful? Yes 

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Fitting Services

Need help with Installation?

Here at CarAudioCentre we offer a professional and reputable fitting service in all our stores. For all fitting enquiries and bookings please visit or call one of our nationwide stores. Our fitters can install your new car stereo, DAB radio, audio visual, speakers, subwoofers or amplifier. We can also help to connect your iPod or MP3 player to you existing audio unit and can offer the best advice on the right in-car entertainment for your vehicle, to further this more we also offer a total 100% custom installation service for demo and show vehicles. So if you have an idea come on in and run it past us, the possibilities are endless and we are never too busy for an enthusiastic chat about our favourite subject.

Please note:

"That our two year warranty on products is only applicable to purchases made directly from us and that have been fitted in one of our stores."

Our Stores:

542 546 Mansfield Road, Sherwood NG5 2FR
Tel: 0115 9624 986
743-745 Eastern Ave, Newbury Park, London, IG2 7RT
Tel: 0208 599 2368
835 Garratt Lane, Tooting, London, SW17 0PG
Tel: 0208 971 9181