--- product_id: 16520987 title: "IF-4000 Analog Portable Interferential PN# KOA-IF4000" brand: "if-4000" price: "ΰΈΏ7584" currency: THB in_stock: true reviews_count: 6 url: https://www.desertcart.co.th/products/16520987-if-4000-analog-portable-interferential-pn-koa-if4000 store_origin: TH region: Thailand --- # Adjustable pulse amplitude Includes 9V DC battery Dual channel operation IF-4000 Analog Portable Interferential PN# KOA-IF4000 **Brand:** if-4000 **Price:** ΰΈΏ7584 **Availability:** βœ… In Stock ## Summary > πŸ’ͺ Elevate Your Wellness Journey! ## Quick Answers - **What is this?** IF-4000 Analog Portable Interferential PN# KOA-IF4000 by if-4000 - **How much does it cost?** ΰΈΏ7584 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/16520987-if-4000-analog-portable-interferential-pn-koa-if4000) ## Best For - if-4000 enthusiasts ## Why This Product - Trusted if-4000 brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **All-Inclusive Kit:** Comes complete with everything you need: leads, electrodes, and a protective case. - β€’ **Portable Powerhouse:** Take your therapy on-the-go with a compact design and included battery. - β€’ **Customizable Comfort:** Adjust the pulse amplitude to suit your personal comfort level. - β€’ **User-Friendly Design:** Manual selection for easy operation, whether you prefer 2 or 4 pad use. - β€’ **Empower Your Recovery:** Experience the benefits of dual-channel therapy for targeted relief. ## Overview The Analog Portable Interferential PN# KOA-IF4000 is a versatile therapy device designed for effective pain relief. It features dual-channel operation with adjustable pulse amplitude, making it suitable for personalized treatment. The device comes with an AC adapter, leads, a 9V DC battery, four self-adhesive electrodes, and a durable plastic case, ensuring you have everything needed for on-the-go therapy. ## Description Analog Portable Interferential PN# KOA-IF4000 ## Features - Dual channel - Manual selection for 2 or 4 pad operation - Adjustable pulse amplitude - Includes AC adapter - Comes with leads, unit, 9V DC battery, 4-self adhesive electrodes, plastic case ## Images ![IF-4000 Analog Portable Interferential PN# KOA-IF4000 - Image 1](https://m.media-amazon.com/images/I/71mCQAjtZYL.jpg) ## Customer Reviews ### ⭐⭐⭐ 3.0 out of 5 stars Might actually be interferential. Usable as TENS unit for sure. Signal strength shuld be greater *by B***A on Reviewed in the United States πŸ‡ΊπŸ‡Έ on February 13, 2019* Over the last 5 years, I bought this TENS unit and two other units. The two other units claimed to be interferential:1) IF 4Kβ„’ digital interferential Dual Channel 6 modes by Koalaty Products2) IF-4000 Analog Portable Interferential PN# KOA-IF4000 by IF-4000I compared the units directly, by leaving the electrode pads in the same place and swapping the leads between the units, which takes only a few seconds, as the electrode pads have connections within 4 inches of the the pad itself. I gave the TENS 7000 4 stars, the IF-4000 3 stars, and the Koalaty unit 1 star.You will find both TENS and interferential units at a rehabilitation business. Proffesional TENS units are inexpensive, 30–100$. Professional Interferential units cost between 1500 and 6k$. The Koalaty control keys and patterns worked beautifully, but the signal was so weak, it was incapable of introducing any changes to the my muscles in chronic spasm. The IF-4000 had no controls other than frequency and signal strength.Of the three units I bought, the TENs 7000 works the best. If I was to make my choices again, I would not bother with the Koalaty unit. The IF-4000 does have a strong enough signal to work to find smaller deeper muscles, it does feel different than the TENS 7000, but I'm still not sure the IF-4000 is interferential, it lacks the signal strength to make a direct comparison.The TENS 7000 has a strong signal and its controls work well. Like any TENS unit, it can be painful at the pad or needle location, or when it lights up a nerve. True interferential units can get deeper with less pain. I do not know the difference in electrical signal which makes one unit TENS and one unit interferential. I experience both in a professional setting as much as twice a week (for 4 years now).I might buy IF-4000 again. It does feel different when used in the same location and time. The frequency controller on the IF-4000 did not work. The IF-4000 has enough signal strength, but its signal strength varies from moment to moment, it has less signal strength than the TENS 7000, and I'm not sure the IF-4000 is really interferential, even now. The signal strength of the IF-4000, while adequate to stimulate deeply located muscles is not strong enough to make a direct comparison to the TENS 7000 and make a guess whether the IF-4000 is actually interferential.The Koalaty controls are excellent, but its signal strength is so weak as to be useless to me for my worst muscle spasm problems, barely useful for large muscles close to the surface, and it is twice the price of the other two units. Like the IF-4000, I am still not sure that the Koalaty unit is interferential. Its signal strength is so weak, there is no way to compare the unit to the IF-4000 or the TENS 7000. You have to feel them at roughly the same (high) intensity to know. The Koalaty unit is also more than double the price of the TENS 7000 and the IF-4000. The problems I have are in muscles around beneath my spine and among the secondary breathing muscles rather than at the surface. I have make the pads small, and push them deep and hold them there to get access to the right muscles. The Koalaty unit just lacks the signal strength for that. I would not bother with this unit. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Works great for muscle injuries due to sports *by W***G on Reviewed in the United States πŸ‡ΊπŸ‡Έ on March 24, 2016* I bought this device almost two years ago because I was told that only an inferential TENS unit would help heal injuries and that other TENS units were only for pain relief. As a runner, I've had lots of leg injuries and this device really helped speed up the healing process. I've had overuse pains in both quads and used it on one side for a day. The next day, that quad was pain free, while the other side was still aching. Same with hamstrings. It's not going to heal a severe injury overnight, but it definitely works.I bought an extra pack of adhesive pads, but the pads can be used over and over if you replace them on the plastic sheet when not in use. The pack of pads I bought are higher quality than the ones that came with this device. In two years of occasional use, I've gone through only 2-3 sets of pads. My point is that pads aren't going to add to the total cost of the device over time. I use it mostly on the 8/8 setting, which varies the speed of the pulse every few (8?) seconds. I would strongly recommend buying 9v rechargeable batteries because it goes through a battery every 2-3 hours. I bought the 4-pack of EBL rechargeable batteries with charger on Amazon, which seem to last as long as a top of the line brand name 9v battery. I use about 2 batteries a day when I'm injured. At a cost of less than one visit to my physical therapist, this device has paid for itself a dozen times over. ### ⭐⭐⭐⭐ 4.0 out of 5 stars Nice one *by A***O on Reviewed in the United States πŸ‡ΊπŸ‡Έ on May 15, 2019* As a physical therapist, I have tried different machines and brands. After my last one died out, I went in search of an IF device that would get the work done at a reasonable price.I must say this was a good purchase, the feeling is really good and it does what I need it to. What I loved the most is that all of the parameters are 100% costumizable, not like the ones that come with preestablished programs. Although to the patients that use it I would definitely recommend that someone helps you get it started for it to have the effect that you are looking for.A downside I found was the battery. I keep it plugged whenever I can but it sometimes is not possible. I used the battery that comes in the box but is marked "low battery" during the first 5 minutes of use. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/16520987-if-4000-analog-portable-interferential-pn-koa-if4000](https://www.desertcart.co.th/products/16520987-if-4000-analog-portable-interferential-pn-koa-if4000) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-28*