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Fit it Yourself?

Everything you need to fit it yourself at home

Only £30.00 

With Steering Wheel Control
Only £50.00 

5 Stars (4)

In Phase Car Audio In Phase IPA1001 2 Channel 2 Ohm Stable Amplifier with Subsonic Filter - B-Stock

Save: £80.99 (40%)  rrp: £199.99
5 Stars
4 Review(s) / write a review
Quickfind Code - 23405
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.

Condition: New

Save: £80.99 (40%)
rrp: £199.99
This product has been discontinued

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  • 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

In Phase 2 Channel 2 Ohm Stable Amplifier with Subsonic Filter - In Phase Car Audio IPA1001 - B-Stock

B-Stock, This item has been refurbished and has signs of use, it may also have damaged packaging or no packaging. There is a limited warranty of just 28 days after the day of delivery.

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 networks with different frequency bands for highpass and lowpass, you will always have full control. Connectivity is excellent with high level as well as RCA inputs and a pass through RCA output to feed more amps, without needing multiple runs of RCA cables.

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. 

All the amps may be bridged for even more power into one channel. Four and two channel designs, all with potent MOSFET power supplies, cover every need from single-amp whole system solutions, all the way to pavement-shaking power mania. There is always a high quality InPhase amplifier (or two) that’s just perfect for your hunger for power.

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. 

The IPA range of car amplifiers gives you the true RMS power to power your system. Some of the amazing features of the new Inphase IPA range of amplifiers have a Subsonic filter so you can adjust your amplifier to deliver more power to the desire frequency range, which mean more power to your speaker. Line in and line out so you can run as many InPhase amplifiers as you want one a single RCA cable. Dual layer circuit boards for improved sound quality and low resistance from internal parts give you a smaller and yet more powerful amplifier.

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 IPA1001 Click here for Image of In Phase Car Audio IPA1001
Technical Specification
  • 150w RMS x 2 @ 4ohms
  • 200w RMS x 2 @ 2ohms
  • 1000 watts max music
  • Regulated power supply
  • MOSFET power supply
  • Tri Mode operation
  • Oversize Power Tranformer
  • Bipolar Output devices
  • Variable cross over (high/low pass)
  • Dimensions (L x W x H) 260mm x 250mm x 55.5mm
  • Bass Boost
  • Variable gain adjustment
  • Thermal protection
  • Overload protection
  • 2ohms Stable
  • Variable Subsonic Filter 20Hz- 50Hz
  • High pass filter frequency 80Hz - 1.2kHz
  • Low pass filter frequency 50Hz - 250Hz
  • RCA output for amplifier linking
Related Accessories
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Customer reviews

Nathan on 06/11/2019 5 star rating

Got this from your branch in garratt lane for my pioneer sub. The team there is very helpful and easy to deal with no hard sales. Advised me on how to set it all up. Big thanks to the store.

Great Amp!
Krystal on 27/11/2014 5 star rating

I brought this along with a inphase pink 10 inch Sub woofer. I went down to my local car meet on a Tuesday evening and every one was impressed with my set up. The amplifier really controlled the sub woofer and was not even turned up all the way. Got the lad's a little jealous as my bass sounded smoother and dropped lower than there's. Would recommend having a word with the lad's in Leicester as they seem to know there stuff!

good stuff
tomas on 20/03/2012 5 star rating

sounds great, built really well, looks great and good value-love the 2 year warranty:)

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Questions/Answers About This Product
  • Question: 24 April 2020
    Car: VW Touran - 2003 >

    What power sub is good for this amp i have a inphase 1400w 400 rms

    The In Phase Sub would be fine for the In Phase Amp

    Found Useful? Yes 

  • Question: 08 January 2020
    Car: Vauxhall Corsa - 2009>

    Hi, would this amplifier be able to run a jbl 1100w peak (275rms) subwoofer?


    yes it would be able to run a 1100w JBL subwoofer of the IPA1001

    Found Useful? Yes 

  • Question: 07 August 2019
    Car: Alfa Romeo 147 - 2000-2007

    i have parallel wired my dvc 4ohm into 2ohm. can i bridge this woofer to this amp. 12inch poineer 750rms. plz help i dont wanna burn my amp. can i bridge my parallel wired now 2ohm sub to this amp...?

    the amp does state its 2 ohm stable however it doesn't say that it will be bridged, i believe it will only run 2 ohm safely in stereo mode for the sake of 50w per side from two to four ohm i would say run it 4ohm stereo

    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