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In Phase Car Audio InPhase IPA2001D 1 Ohm Stable 2000 Watts RMS MonIPA2001D
£194.99 Save £155.00  was:£349.99
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5 Stars (38)

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

Save: £155.00 (44%)  rrp: £349.99
5 Stars
38 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.

Condition: New

Save: £155.00 (44%)
rrp: £349.99
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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
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Customer reviews

Chief on 24/11/2020 5 star rating

Running 2 of these on 4 Alpine R Type 15s. Nearly reshaped my face lol

my purchase experience
ian white on 09/10/2020 5 star rating

hi so like to share my experience with this amp previously I had a pioneer mono block it was fantastic powering my 12"type r. New project in my van I decided on 2x8" inphase subs with this amp and honestly its definitely as good after a little bit of tweaking big thanks to mo and the boys at Ilford my trust was with them and yes it pulled off

mark hill on 12/09/2020 5 star rating

i have just fitted mine in replacement for the pioneer which keeps going into protection, it has more power and the sub bass feels alot stronger

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Questions/Answers About This Product
  • Question: 12 January 2021
    Car: BMW 5 Series (E39) - 2004> (E60)

    Is the bass level controller witch cable inside? If not can you offer one for this item?



    These amps come with a bass remote.

    Found Useful? Yes 

  • Question: 11 December 2020
    Hello chaps the inphase amp's can they be mounted on there side of bulkhead panel or do they have to be sky facing running db audio 12 3000 subwoofer I be interested in inphase amp if they can

    Hi, you can Moutn the In Phase Amp anyway, when we used to build big SPL systems we even installed amps on the roof lining!

    Found Useful? Yes 

  • Question: 30 October 2020
    Car: Mazda 3 - 2004-2008

    Hi guys
    I have 2x inphase xt12s the old version would this amp be a good amp to power them both. There rated at 700rms each and i have them wired to 2 ohms?
    Many thanks


    The IPA2001D is a great amp,one of the legends! Iwould highly reconmend it.

    IP21 2 Gauge Hi Quality Enchanced Amplifier Installation 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