--- product_id: 5323004 title: "AUDIOVOX FMM100 FM modulator with isolation transformer" brand: "audiovox" price: "€ 14.46" currency: EUR in_stock: false reviews_count: 8 url: https://www.desertcart.pt/products/5323004-audiovox-fmm100-fm-modulator-with-isolation-transformer store_origin: PT region: Portugal --- # Clear FM signal transmission Interference isolation tech External on/off switch AUDIOVOX FMM100 FM modulator with isolation transformer **Brand:** audiovox **Price:** € 14.46 **Availability:** ❌ Out of Stock ## Summary > 📻 Drive Your Sound, Own the Airwaves! ## Quick Answers - **What is this?** AUDIOVOX FMM100 FM modulator with isolation transformer by audiovox - **How much does it cost?** € 14.46 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/5323004-audiovox-fmm100-fm-modulator-with-isolation-transformer) ## Best For - audiovox enthusiasts ## Why This Product - Trusted audiovox brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Crystal-Clear Sound:** Built-in isolation transformer minimizes interference for premium audio clarity on the road. - • **Universal Compatibility:** Works effortlessly with a wide range of audio devices, making your car stereo smarter. - • **Plug-and-Play Convenience:** Simple setup means you’re ready to enjoy your favorite tunes in minutes—no tech hassle. - • **Seamless Audio Integration:** Connect any compatible audio source directly to your car’s FM radio for instant playback. - • **User-Controlled Modulation:** External switch lets you easily toggle the modulator on or off without unplugging. ## Overview The Audiovox FMM100 FM Modulator transforms your car’s FM radio into a versatile audio hub by wirelessly transmitting signals from compatible devices. Featuring an external on/off switch and an isolation transformer, it ensures interference-free, high-quality sound with easy control and universal compatibility. ## Description Movies 2 Go FMM100 FM Modulator Review: Overall, a great option for adding AUX to your car stereo - So basically this is a fantastic way to add an auxilliary device to your current car stereo with the most minor of modifications. It's especially fantastic when you don't have any other way to wire things in, such as harness patches, aftermarket systems that replace the CD changer, or a new headunit. This is the second unit I've installed. The first was about 6 years ago in my '85 Mustang (keeping it all original). This one went in a '98 BMW (essentially no other options at all). Easy install each time. Be aware that for non-domestic vehicles, you may need an antenna adapter. My Mustang just plugged right in, but the BMW required antenna adapters. Required for install: a 12v switched power source, a ground connection, and a 1/8" to RCA phono cable from RadioShack. Plug the antenna into the modulator, plug the modulator in the back of your radio, and mount the on/off switch for the modulator somewhere accessible. Done. Sound quality has always impressed me with these. Sure it's not the same as a direct connection into your system, but for not having to hack anything up, lose your CD changer, or spend $$$ on a new headunit and install, it's great. I get no hissing or extraneous noise whatsoever in either car. Picky people and audiophiles will say that sound is decent, but lacks the full range and clarity that for instance you would hear out a CD in the car. Also, like the radio, audio does sound a little muddled and not as crisp as a CD. I agree. But to put it in perspective, this modulator is 20 times better than a wireless FM transmitter (no noise, no batteries, better sound) and 100 times better than no iPod/mp3 player. Overall, I feel the sounds is very good and I will be very happy with it for years to come. I've been using it in my Mustang for years now, and will do the same in the BMW. Don't forget you can tailor the sound for your system using the EQ on your iPod/mp3 player and adjustments on your headunit. I put my iPod on Treble Booster, bumped the treble and bass a little on the headunit and it sounds very very good. I gave the sound quality 4 stars, but it deserves 4.5 (at least the way it is installed and adjusted for in my systems). Overall, for $30, this thing gets 5 solid stars from me. Review: Junk - Couldn't make it work at all. I even set up a test on the bench to no avail. I finally threw it in the trash can where it belongs. ## Features - Audiovox FMM100 FM modulator - EXTERNAL SWITCH TO TURN OFF/ON MODULATOR - Audio signals from compatible Audio sources to your car's FM receiver, so you can enjoy interference- - FMM100A FM Modulator with Isolation Transformer ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.0 out of 5 stars 24 Reviews | ## Images ![AUDIOVOX FMM100 FM modulator with isolation transformer - Image 1](https://m.media-amazon.com/images/I/41785VpwoKL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Overall, a great option for adding AUX to your car stereo *by R***6 on April 29, 2010* So basically this is a fantastic way to add an auxilliary device to your current car stereo with the most minor of modifications. It's especially fantastic when you don't have any other way to wire things in, such as harness patches, aftermarket systems that replace the CD changer, or a new headunit. This is the second unit I've installed. The first was about 6 years ago in my '85 Mustang (keeping it all original). This one went in a '98 BMW (essentially no other options at all). Easy install each time. Be aware that for non-domestic vehicles, you may need an antenna adapter. My Mustang just plugged right in, but the BMW required antenna adapters. Required for install: a 12v switched power source, a ground connection, and a 1/8" to RCA phono cable from RadioShack. Plug the antenna into the modulator, plug the modulator in the back of your radio, and mount the on/off switch for the modulator somewhere accessible. Done. Sound quality has always impressed me with these. Sure it's not the same as a direct connection into your system, but for not having to hack anything up, lose your CD changer, or spend $$$ on a new headunit and install, it's great. I get no hissing or extraneous noise whatsoever in either car. Picky people and audiophiles will say that sound is decent, but lacks the full range and clarity that for instance you would hear out a CD in the car. Also, like the radio, audio does sound a little muddled and not as crisp as a CD. I agree. But to put it in perspective, this modulator is 20 times better than a wireless FM transmitter (no noise, no batteries, better sound) and 100 times better than no iPod/mp3 player. Overall, I feel the sounds is very good and I will be very happy with it for years to come. I've been using it in my Mustang for years now, and will do the same in the BMW. Don't forget you can tailor the sound for your system using the EQ on your iPod/mp3 player and adjustments on your headunit. I put my iPod on Treble Booster, bumped the treble and bass a little on the headunit and it sounds very very good. I gave the sound quality 4 stars, but it deserves 4.5 (at least the way it is installed and adjusted for in my systems). Overall, for $30, this thing gets 5 solid stars from me. ### ⭐ Junk *by H***O on November 13, 2011* Couldn't make it work at all. I even set up a test on the bench to no avail. I finally threw it in the trash can where it belongs. ### ⭐⭐ Not as described *by K***N on April 4, 2011* There were a number of questions asked about which make/model of car this would be used in so that the "proper" style would be delivered. This was to fit a 2006 Dodge Grand Caravan but when it arrived the antenna fittings were completely wrong and could not be installed. I had to make a second purchase(not from this supplier) for the proper patch cord. When I asked about the issue I was pretty much blown off. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/5323004-audiovox-fmm100-fm-modulator-with-isolation-transformer](https://www.desertcart.pt/products/5323004-audiovox-fmm100-fm-modulator-with-isolation-transformer) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-06*