ANR Headset Retrofit Kit

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Part# 11-11955
MFR Model# M-001-A


The M-001-A ANR Adapter is a product that will transform a current aviation headset into a high-tech active noise reduction unit. The ANR Adapter comes as a kit and includes a pair of inserts that fit more than 20 different headset models. Installation requires fitting the inserts, drilling a small hole in one earcup for the power receptacle, and soldering the original cable leads to the kit replacement parts. (uses one 9-volt battery).

It is mandatory that you use "silicone gel" type earseals. The original earseals (dry or liquid filled) are not as airtight as gel seals, and in addition do not dampen sound and vibration as effectively.

The result is that the ANR units will greatly underperform (20-50%) and will be more likely to malfunction. Several brands of gel earseals are compatible with the ANR modules. These include David Clark gel ear seals, AvComm gel ear seals, FlightCom gel-flo ear seals, and Sigtronics gel earseals.
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to see our large selection of ear seals.

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Compatible Headsets

  • Model M-001 is the "standard" module & fits most headsets.
  • ADI: Fits models 810.50.
  • Aircom: See Flightline.
  • Aircraft Spruce: See Skyline.
  • ASA: Fits all models (HS-1).
  • Avcomm: Fits all. Models AC-900, AC-800, & AC-454 need 5c x-over cable.
  • Aviall/Avix: Fits all models.
  • David Clark: Fits all the H10-XX series.
  • Eastern Avionics: Fits models Mil-2060.
  • Falcon: Fits all models.
  • Flightcom: Fits models 4DX & 4DLX. This does not fit the Eclipse!
  • Flightline: Fits model HS-60-B.
  • Gulf/Pacific Coast Avionics: Fits models GCA-4T & GCA-6T.
  • Marv Golden: Will fit all except the MG-90.
  • Mendelssohn: See Pilot Avionics
  • Pilot Avionics: Fits the PA11-XX series headsets and the P-51, PA12.8S, & PA Cadet. Models PA11-90
  • RST: Fits all models.
  • Sigtronics: Fits models S-8, S-20, S-40, S-45, S-58, S-65, & S-68. Most are wired in series.
  • Skyline: Fits the Skycom H-40A & the Skypro H-80A.
  • Softcomm: Fits all models. Models C-10 & C-60 need a 5c x-over cable.


In The Box

  • Standard modules containing Audio Speaker, ANR speaker, Sensing microphone and control board.
  • Assembly parts containing wire, solder, tie wraps, shrink tubing and Aramid pads.
  • Gray foam cross for passive noise attenuation
  • Power cable 72" long to connect battery box to ANR system
  • Crossover cable to replace existing cable on headset
  • Standard Battery box to power ANR system. Uses (1) 9 volt transistor battery
  • Installation manual


Kit used to update my DC10-60 mono headset. The kit included the AMP Cable Audio+MIC+Power as standard. I was able to re-use the DC cable headset connector by tying back the blue stereo channel wire. It works well so far.

Robert P Verified Purchase


December 6, 2022

Jaakko M Verified Purchase


October 18, 2022

Jaakko M Verified Purchase


October 18, 2022

Like many pilots I have had several headsets. I had a Bose X which worked well when I had my Mooney 201 but did only a fair job with my Europa homebuilt with a Rotax 914 as it did not suppress the high frequency noise from the Rotax. I purchased a Senheiser ANR headset as it had better high frequency noise attenuation but my old David Clark H10-13 was still better at the high frequency noise control when behind a Rotax but the low frequency propeller rumble was a problem. I was about to purchase a DC One X but saw a video review of this kit and thought I would give it a try ,having built electronic kits in the past it was, I felt, fairly straightforward and is now the best headset for flying behind a Rotax 914 I have ever had and is far superior in this case to my Senheiser ANR. The incoming voice communications are ok but you would not use it to listen to music as the lower frequencies are absent. I would highly recommend this for someone with an old DC headset and a Rotax powered aircraft. I converted my other DC headset for passenger use as well. ACS service was great as always but the first kit included the AMP accessory cord so I returned the extra one I purchased. The second kit did not include it so I had to purchase the AMP wiring set, which I highly recommend as it is neater. Could ACS explain why what kit had the AMP cord included and one did not?

Chris S Verified Purchase


September 3, 2022

Excellent product and really enjoying having the benefit of ANR at a much lower cost than buying a new headset. The install took 2 hours and the instructions are very thorough. Would highly recommend.

Anthony R Verified Purchase


June 5, 2022

Works great in my RV4. First flight yesterday with the ANR mod installed in my DC10-13.4. Get the connector cable and save drilling a hole in your headset. Installation steps in instructions are sometimes out of order.

Jeff P Verified Purchase


January 7, 2022

I have had the Headsets Incorporated (HI) ANR kit installed in my David Clark (DC) H10-13.4 for two years now. I installed the kit myself. I will comment on the individual phases of ownership below. Purchase: Made a phone call to be sure of any options available. This was pleasant, quick and easy. Installation: I am an experienced electronic engineer with thousands of build projects and repairs to my experience. I am also an audio engineer so I have a clue. The HI written instructions were just ok, but the color wiring diagram made it easy to complete the installation. I ended up reusing the DC foam from over their speakers in addition to everything HI furnished. It filled the small remaining void between the speaker and my ear. I also made some small deviations in construction that in no way effect the final product, like using shrink wrap in the connections. Its just me, Im fussy. Even though the HI speakers are held in assembly with the DC earcups with the finest double-sided tape I know, I wish another type of fastening was used but they have held up to frequent use for two years. Early use: At first I was getting squeals and other oscillations and was not happy with my purchase. It always seemed to happen about an hour into my wearing them. This happened multiple times in flight and I had to turn off the ANC power to stop the very loud squeal. Phone call to HI customer service: Got right thru to the main engineer at HI. Knowledgeable and helpful, we discussed possible solutions. In the end he offered to take them in to adjust them at no charge. Very positive experience. But I never sent them in. Read on please. Recent experience: The squeal and other sounds were caused by my unfamiliarity with how to wear the modified headset. Simply making sure the soft earcup was centered over my ears with my entire ear comfortably tucked into the open area (and not squished against my head by the gel pad) solved any and all issues. I have worn them for up to five hours in a day. Most people put these DC type of headsets on and squish their earlobe between the cup and their neck and call it good. Even PNR headsets will eventually cause your ear lobes to ache due to reduced blood flow. Just tuck your entire ear in the open area and these HI ANRs work wonderfully. Final thoughts: Simply knowing how to wear the headsets solved all issues. I have used these HI ANRs for hundreds of hours. I tow gliders, and in 24 months have about eight hundred tows in my log book (all with the HI kit) so you know I have put in some hours while benefiting from HI ANR. Installation was easy for me. Customer service was willing to help. The kits are reliable. I just had to learn how to place the headset on my noggin. John

John S
November 23, 2021

Great support during installation from manufacturer

Joe D Verified Purchase


June 23, 2021

Works very well

Warren R
July 30, 2020

I installed this kit in my SPH-5 helo hemet. It was a bit tedious, but that was to be expected. This made a huge difference in the amount of noise in my PA-12 160. I used to have to use earplugs on anything other than local flights. As far as the installation goes, you need to be deft with your soldering or it isnt going to go well. It isnt electronics, but you need to be careful and follow the instructions, which I found well-written. I had one problem (my fault) because of reading the instructions wrong, so I called the manufacturer. The owner answered the phone. There you go.

October 17, 2019


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Are these from ANR Retrofit Kits from Headsets Inc.?

Yes, these kits are made by Headsets Inc.

Q: Does this kit (part #11-11955) include the Auto Shut Off battery box? If not, do you offer the upgraded Auto Shut Off battery box?

No, the kit comes with the standard battery box. The auto shutoff box must be special ordered under part PM-004-2. Contact sales for a price quote and lead time.

Q: Ive got a DC Model H10-36 with a Dynamic Amplified MIC. Most headsets have an Electret MIC will this kit work with an amplified MIC?

Yes, this will work with your headset.

Q: Does it have an auxiliary input for music or a Bluetooth adapter?

No,this is a retrofit kit and comes with a battery pack , cabling and all necessary installation materials.

Q: Is this kit stereo or mono?

That depends on the headset. It can be used with both stereo and mono headsets.

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