FM-41
Own your performance — and your hygiene — with the FM41 Solo Instructor Mic, a lightweight fitness headset microphone designed for individual instructors who want reliable audio without sharing sweaty studio gear.
Purpose-built for light-to-moderate class schedules, the FM41 delivers clear vocal projection in a durable, sweat-resistant design ideal for yoga, Pilates, aerobics, and general group fitness. Its sealed microphone capsule protects against moisture exposure, while the flexible steel-spring frame provides a secure, comfortable fit across extended sessions.
Rated for one class a day. Take the windscreen off after class and give the mic a full day to dry before you use it again.
A standout feature of the FM41 is its universal replaceable cable system — allowing you to swap connectors instead of replacing the entire headset if wear occurs. This significantly extends product lifespan and reduces long-term ownership cost.
Affordable, dependable, and instructor-focused, the FM41 is the perfect entry point into professional fitness audio.
Already have a wireless system?
The FM-41 plugs into the transmitter you already own, including Shure, Samson, Sennheiser, AKG and Fitness Audio. Pick your connector above. Not sure which one? Use the Connector Finder.
Trusted by 50,000+ fitness instructors since 1994. Compare all four headsets or take the Mic Finder.
Complete your setup
- Standard Pouchbelt: holds your transmitter, 90+ colors
- Windscreens: swap every few weeks for clean sound
- eGloop: monthly connector protection against sweat
- Mic Case: protects the headset between classes
SKU FM-41K-1
Spec sheets and manuals
FM-41 · The solo instructor mic
Your own mic, for a lighter schedule.
A sealed-capsule headset for instructors teaching one class a day who'd rather not share the studio's sweaty headset. Rated for one class a day, with a cable you swap instead of replacing the mic.
Swap, don't replace
One mic. Any transmitter.
The cable screws into the base of the headset. Unscrew one, screw in another, about ten seconds. Teach at a Shure studio on Monday and an AKG studio on Tuesday with the same mic.
Rated for one class a day. Pull the windscreen off after class and give the mic a full day to dry before you teach with it again.
Cable guide
Which cable fits your pack
- TA4FShure, Fitness Audio, Mipro, JTS4-pin
- TA3FAKG, Samson3-pin
- 3.5mmSennheiserLocking
Spare cables are $25. Swap in a new one when the old one wears out.
For the instructor
It's yours. No more borrowing the gym's headset that three other people sweated into this week.
The steel-spring frame bends to fit, the capsule is sealed against moisture, and the foam windscreen pulls off to dry and swaps out in seconds.
Pick the cable for your transmitter: TA4F for Shure and Fitness Audio, TA3F for AKG and Samson, 3.5mm locking for Sennheiser.
When to step up
Teaching more than one class a day, or sweating hard every class? The EMic adds a noise-cancelling capsule and a steel cable, rated for up to 20 classes a week with two mics in rotation.
Spin, HIIT or a hot room every day? That's Aeromic and Cyclemic territory: 7 classes a day with two in rotation and a 2-year sweat warranty.
Not sure which mic fits your schedule?
About the FM-41
Tech specs
Sealed, water-resistant condenser
Adjustable steel-spring, fits most head shapes
Replaceable: 4-pin MultiMic TA4F, 3-pin MultiMic TA3F or 3.5mm TRS locking. Unscrew one, screw in another
Fitness Audio, Shure, Sennheiser, AKG, Samson, Audio-Technica, Mipro, JTS, Trantec
Solo instructors, yoga, Pilates, barre, aerobics, light group fitness
In the Box
Swap. Don't replace.
Universal replaceable cable system. Switch transmitter brands without buying a new mic. The smartest entry point into professional fitness audio.
FAQ
Frequently asked questions by current and future customers
Who is the FM-41 for?
Solo instructors who want their own mic instead of using the gym's shared headset, teaching about one class a day. Yoga, Pilates, barre, light aerobics and general group fitness. If you teach more than one class a day or sweat heavily, the EMic or Aeromic is a better fit.
How does the replaceable cable work?
The cable screws into the base of the headset. Unscrew one, screw in another. Takes 10 seconds. If you teach at a gym with Shure transmitters and another with AKG, buy a TA4F cable and a TA3F cable and one mic covers both. If a cable wears out, replace just the cable for $25 instead of buying a new headset.
What transmitters does it work with?
TA4F cable works with Fitness Audio, Shure, Chiayo, Mipro, JTS, and other 4-pin mini-XLR transmitters. TA3F cable works with AKG and Samson. 3.5mm TRS Locking cable works with Sennheiser. You can order multiple cables and swap between studios.
Is it sweat-resistant?
The capsule is sealed and water-resistant. It handles light-to-moderate sweat from yoga, Pilates, barre, and moderate-intensity group fitness. It's not built for daily high-sweat classes like HIIT, cycling, or hot yoga — for those, the EMic or Aeromic has heavier sweat protection.
How is this different from the EMic?
The FM-41 is lighter-duty and about half the price. The EMic adds a noise-cancelling capsule, steel cable, reinforced frame, and is rated for 20 classes a week. The FM-41's advantage is the replaceable cable system — the EMic cable is fixed. If you teach at multiple studios with different transmitter brands, the FM-41 is the more flexible choice at the entry level.
When should I upgrade?
When your schedule outgrows one class a day, or when you start teaching higher-sweat formats regularly. The EMic ($249) handles 20 classes/week with noise cancellation. The Aeromic ($449) handles up to 49 a week with two mics in rotation, and has a 2-year sweat warranty.
Does it need a wireless transmitter?
Yes. The FM-41 is the headset mic only. It plugs into a wireless bodypack transmitter via the cable. If you don't have a wireless system, check our complete kits — the Instructor Starter Kit includes everything.
Can I use this for hot yoga or cycling?
Not recommended for regular use in heated studios or heavy cycling schedules. The sealed capsule handles some moisture, but the FM-41 isn't built for the extreme sweat exposure those formats produce day after day. The Cyclemic (cycling) or Aeromic (hot yoga, HIIT, heavy sweat) are the right picks for those environments.
What's included?
FM-41 headset, one connector cable in your selected type (TA4F, TA3F, or 3.5mm TRS Locking), one windscreen, and a user manual. Additional connector cables available separately.