Plantronics MS50 Aviation Headset Amplifier
The MS50 amplifier bridges your aviation headset to communication systems with precision-tuned audio engineering designed for cockpit environments. We built this inline amplifier to solve a critical challenge pilots face: maintaining clear two-way communication across different aircraft panels and intercom systems without carrying multiple headsets.
Every MS50 unit features independent volume controls for transmit and receive channels, allowing you to balance cockpit noise against radio clarity in real time. The quick-disconnect design integrates seamlessly between your headset and panel connection, adding amplification without adding bulk to your flight bag. Whether you’re flying light sport aircraft with minimal panel space or transitioning between rental planes with varying audio outputs, the MS50 ensures consistent communication quality across every airframe.
- Inline amplification with independent transmit/receive volume controls
- Push-to-mute button for instant microphone cutoff during critical phases
- Universal dual-plug GA compatibility (PJ-055 and PJ-068 standard)
- Compact housing: 3.2″ × 1.8″ × 0.9″, weighs just 2.1 ounces
- 9V battery operation with 40+ hour runtime under normal use
Volume Control & Audio Management
The dual-dial configuration on the Plantronics MS50 gives you granular control over both sides of your audio chain. The receive volume dial adjusts incoming radio traffic and intercom chatter, while the transmit dial governs your microphone output level reaching other crew and ATC.
This separation matters when you’re managing multiple audio sources simultaneously. You can reduce distracting ramp chatter on the intercom without lowering ATC volume, or boost your mic gain when flying behind a loud radial engine without overdriving the circuit. The tactical mute button sits within thumb reach on the front face, letting you kill the mic instantly during engine runup or when coordinating with passengers. Many pilots position the amplifier on their lap belt where both volume wheels remain accessible throughout the flight envelope.
Installation & Headset Compatibility
The MS50 uses standard general aviation dual-plug terminations: a PJ-055 microphone plug and PJ-068 headphone plug that match 99% of light aircraft panel jacks. Installation requires no tools—disconnect your headset from the panel, insert the MS50 inline, then reconnect your headset to the amplifier’s input jacks.
Our engineering team designed the unit to work with passive and ANR headsets alike, including legacy models that predate active noise reduction. The signal path maintains impedance matching for dynamic microphone elements while providing sufficient gain for electret mics. Pilots transitioning between different aircraft types appreciate carrying one amplifier that adapts to varying panel output levels rather than the specialized cables and adapters that once cluttered flight bags.
Power Supply & Battery Life
A single 9-volt alkaline battery powers the MS50 for an entire season of weekend flying. We measure typical runtime at 42 hours of continuous operation, though actual duration varies with volume settings and headset impedance.
The red LED indicator on the front panel illuminates when battery voltage drops below the threshold for clean amplification, giving you advance warning to swap the cell before audio quality degrades. The battery compartment opens with a quarter-turn fastener on the rear housing—no screwdriver required for mid-flight replacement. Lithium 9V cells extend runtime in cold-weather operations where alkaline performance drops, though standard batteries deliver reliable service across most GA flying conditions.
Aviation Communication Amplifiers & Accessories
What people are saying
Common Questions About the MS50 Amplifier
Yes, the Plantronics MS50 is fully compatible with both ANR and passive aviation headsets. The amplifier sits between your headset and the aircraft panel, handling only the audio signal path without interfering with the headset’s independent ANR circuitry. Your headset continues drawing power from its own battery source while the MS50 amplifies transmit and receive audio using its separate 9V supply.
Rechargeable NiMH 9V batteries work in the MS50, though they provide slightly shorter runtime than alkaline cells due to lower voltage output (8.4V versus 9V nominal). A quality rechargeable delivers approximately 28-32 hours of operation compared to 40+ hours with alkaline. The low-battery indicator will illuminate earlier with rechargeables, giving you advance notice to swap cells before audio quality degrades.
The MS50 amplifies audio signals—it does not provide active noise cancellation. The amplifier boosts clarity of radio communications and intercom audio, making voices more intelligible against engine noise, but it does not reduce the ambient cockpit sound itself. For noise reduction, you need an ANR headset in combination with the amplifier. The MS50 enhances the audio signal quality that your headset (passive or ANR) then delivers to your ears.
The front-panel LED indicator illuminates red when battery voltage drops below the threshold for optimal amplification. This warning appears well before complete battery failure, typically providing 2-4 hours of remaining operation. You’ll also notice gradual reduction in maximum volume output and slightly increased background hiss as the battery depletes. We recommend carrying one spare 9V battery in your flight bag and replacing the cell at the first sign of the low-battery indicator.
The MS50 is designed and marketed for general aviation applications. It does not carry TSO certification required for commercial airline operations or Part 135 charter flying. The unit complies with FCC Part 15 regulations for unintentional radiators and meets general aviation audio standards. For commercial operations, consult your chief pilot and maintenance department regarding approved audio equipment for your specific operation type and aircraft.
Yes, the MS50 features two separate rotary controls: one dial adjusts receive volume (incoming radio and intercom audio you hear), and the other controls transmit volume (your microphone output level that others hear). This dual-control design allows you to balance cockpit intercom chatter against ATC communications independently, or boost your mic gain in loud cockpits without affecting your listening volume. The controls operate continuously rather than in stepped increments, providing precise adjustment.
The MS50 draws minimal current when idle with no audio signal present, but leaving it connected will eventually drain the battery over several days. The unit has no mechanical power switch—it activates automatically when plugged into the aircraft panel. Best practice is to disconnect your headset from the amplifier after each flight, which breaks the circuit and eliminates any parasitic drain. The quick-disconnect design makes this a one-second operation during post-flight shutdown.