₹250,000Original price was: ₹250,000.₹209,000Current price is: ₹209,000.Save ₹41,000 (16%)
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The Lectrosonics HMa-B1 Plug-On Transmitter makes any XLR microphone wireless in band B1, with selectable 5/15/48 V phantom, 50/100 mW RF power and Digital Hybrid audio.
Plug directly onto any microphone or line-level source and make it wireless — handhelds, shotguns and podium mics included.
5, 15 and 48 V phantom (or off) covers condenser, electret and dynamic microphones plus line sources from one unit.
76 MHz of tuning with 3072 frequencies keeps the transmitter usable as local spectrum changes.
Choose lower power for battery life or full power for range, depending on the shot.
A dual-envelope soft limiter guards against sudden peaks without audible pumping.
The Lectrosonics HMa-B1 Plug-On Transmitter turns any XLR microphone or line source into a Digital Hybrid wireless channel in band B1 (537.600–614.375 MHz). Plug it onto a handheld, shotgun or podium microphone, select 5, 15 or 48 V phantom power to suit the capsule, and the HMa’s wideband tuning, 50/100 mW RF output and dual-envelope soft limiter deliver broadcast-grade audio with the freedom to roam the set.
Production mixers choose the Lectrosonics HMa-B1 Plug-On Transmitter because it removes the bodypack compromise for wired microphones: no adapter cables, no fixed gain staging, and phantom power that matches the microphone instead of fighting it. Its Digital Hybrid link pairs with SRc, Venue and other Lectrosonics Digital Hybrid receivers, and IR sync makes frequency matching a one-button job on a busy shoot day.
Key Features
This model packs the features buyers ask for first, in a package that is easy to live with every day.
Any XLR source, wireless: Plug directly onto any microphone or line-level source and make it wireless — handhelds, shotguns and podium mics included.
Selectable phantom power: 5, 15 and 48 V phantom (or off) covers condenser, electret and dynamic microphones plus line sources from one unit.
Wideband B1 tuning: 76 MHz of tuning with 3072 frequencies keeps the transmitter usable as local spectrum changes.
50 / 100 mW RF power: Choose lower power for battery life or full power for range, depending on the shot.
Soft limiter protection: A dual-envelope soft limiter guards against sudden peaks without audible pumping.
Best Suited For
The Lectrosonics HMa-B1 Plug-On Transmitter suits ENG, documentary, reality and live-event crews who need to cut the cable on handheld interview mics, boom poles, podium microphones and audience microphones. It is also the right tool for houses of worship and conference venues that want one wireless unit to serve many different wired microphones.
Setup and Connection Guide
Plug the HMa directly onto the microphone’s XLR connector and select phantom power to match the microphone (off for dynamics and line sources). IR-sync the transmitter to a free frequency on your receiver, set input gain so peaks engage the limiter only on the loudest passages, and choose 50 mW for typical rooms or 100 mW for long range. Fit two fresh AA batteries, confirm the multi-colour LED shows a healthy link, and keep a spare pair of AAs in the kit bag — expect around five hours without phantom power.
Frequently Asked Questions
What phantom power options does the Lectrosonics HMa-B1 Plug-On Transmitter offer?
Selectable 5 V, 15 V and 48 V phantom power, plus OFF for dynamic microphones and line-level sources.
What frequency band is the Lectrosonics HMa-B1 Plug-On Transmitter?
Band B1, 537.600 to 614.375 MHz, with a 76 MHz tuning range and up to 3072 selectable frequencies.
How long do batteries last in the Lectrosonics HMa-B1 Plug-On Transmitter?
About 5 hours on AA alkaline with no phantom power, and about 3.5 hours when supplying 48 V phantom power.
Technical Specifications
Transmitter type
Wideband Digital Hybrid plug-on transmitter
Frequency band B1
537.600 – 614.375 MHz
Tuning range
76 MHz, up to 3072 frequencies (25 / 100 kHz steps)
RF power
Selectable 50 / 100 mW
Input connector
Standard 3-pin XLR female
Phantom power
Selectable 5 V / 15 V / 48 V or OFF
Input level
Nominal 2 mV – 300 mV before limiting; over 1 V maximum with limiting
Input impedance
300 ohms
Frequency stability
±0.002%
Deviation
±75 kHz maximum (Digital Hybrid mode)
Dynamic range
125 dB with full transmitter limiting
Battery
2 × AA
Battery life
About 5 hours (alkaline, no phantom); about 3.5 hours at 48 V phantom
Buy with peace of mind. The Lectrosonics HMA-B1 Plug-On Transmitter comes with the official manufacturer’s warranty for India, valid from the date on your GST invoice. Pro Audio Video is a specialist audio video store, and every product we sell is brand new, sealed and sourced through authorised channels, so your warranty is honoured at brand service centres across India.
Official Indian warranty, as specified by the manufacturer
GST invoice with every order, needed for warranty claims
We help you raise and follow up warranty claims with the brand
Delivery and Shipping
Same-day dispatch on most in-stock orders
Delivery anywhere in India; delivery time depends on your location
Shipped securely in the original manufacturer box
Cash on delivery available on orders up to ₹45,000
Tracking details by SMS and email as soon as your order ships
Returns and Refunds
Not right for you? Return unused products in their original packaging within 7 days of delivery. If a product arrives damaged or defective, tell us within 48 hours with photos and we will replace it or refund you in full.
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