Lightspeed Sierra 4000

Part No:

Manufacturer: LIGHTSPEED

Lightspeed Sierra 4000

The Lightspeed Sierra redefines performance and value in an ANR headset, with several advanced features found in much more expensive ANR's. Sierra has an integrated cell phone BlueTooth interface, plus a wired interface to any portable music device – and the music will automatically mute for incoming transmissions.

Lightspeed Sierra ANR Headset Battery Features

Sierra will operate for up to 40 hours on two "AA" batteries, and the battery status indicator will let you know when the batteries are getting low. The auto shut-off feature keeps the batteries from discharge if you forget to turn the ANR off. Sierra has dual volume control, weighs 16 ounces, and includes a padded headset bag, microphone windscreen, music interface cable, and Lightspeed 5 year warranty.

Lightspeed Headset Discount

Qualifying flight instructors or professional pilots will receive a manufacturer's rebate of $100 USD when purchasing a Zulu 3 or wireless Tango®. 

Although the rebate amounts are the same for both flight instructors and professional pilots, the eligibility requirements differ. In addition to a copy of their sales receipt from an authorized Lightspeed dealer showing the purchase of a new Lightspeed headset within 30 days of application.

Submit the following to Lightspeed:

Certified Flight Instructors

  • A copy of their CFI license or other official documentation showing government authorization to instruct student pilots
  •  recent page from their logbook showing instructional flights

Professional pilot

  • A copy of their ATPL/CPL indicating ATP or commercial pilot certification (or equivalent in your country)
  • A copy of their ID showing proof of current employment as a professional pilot

CFI and Pro Pilot Appreciation Program rebates cannot be used in conjunction with any other coupon, rebate, trade credit, or discount offers on Lightspeed headsets.

  • Superior quiet – Active noise cancellation over a broad range of low-frequency noise brings state-of-the-art technology to Sierra.
  • Comfort and durability – Weighing just 16 ounces, Sierra is light on the head. Covering nearly 10 square inches of surface area, the ear seals create a better seal and greater distribution of side pressure.
  • ComPriority – Never miss important radio communications. ComPriority features Lightspeed-patented technology that automatically lowers the volume of any auxiliary device during radio or intercom transmissions.
  • Reversible microphone – Our unique design allows for right or left microphone placement so you can fly with technology on your side.
  • Mobile phone and music connection – In addition to full Bluetooth connectivity, Sierra offers an integrated control box auxiliary input, making it easy to connect a mobile phone, iPad or music/audio device.
  • FlightLink – Capture incoming and outgoing communications with Lightspeed’s free FlightLink recording app for Apple iPad and iPhone via the supplied patch cable. This app is exclusively available on Lightspeed headsets.
  • Included accessories – A music/audio patch cord, cord clip, two AA batteries, a carrying case and a foam windscreen are included with every Sierra.
  • Available configurations: Dual GA plugs
  • 30-day money-back guarantee – We know that every cockpit and pilot is different. That’s why we offer a 30-day, money-back guarantee. If you are not completely satisfied with your purchase for any reason, return the product for a full and prompt refund.
  • 5-year warranty – Lightspeed stands by the quality of the Sierra with a comprehensive 5-year warranty of materials and workmanship.
  • Made in USA – The Sierra is built, rigorously tested, and inspected by Lightspeed employees at our Oregon facility.

Tech Specs

Headphone Impedance
OFF Mono-180 Ω, ON Mono-300 Ω
OFF Stereo-250 Ω, ON Stereo-600 Ω
All @ 1kHz

Speaker Frequency Response (Active)
20Hz to 20kHz (volume sliders max)

Microphone Electret
Bias: 8-16V (Not polarity sensitive)
Bias Resistance: 220Ω-2200Ω

Sensitivity Electret
20mV-80mV across 8-16V
Bias Re: 94dB SPL input at 6mm

Frequency Response
200Hz-6000Hz

Maximum SPL for Microphone
114db

Power Source
Battery: 3V, 2(AA) Alkaline batteries (Average battery life 40 hours)

Maximum SPL for ANR
> 120dB @ 100Hz

Weight: 16 oz.

Bluetooth Enabled Phone: Yes

Bluetooth Streaming Music: Yes

See below for answers to our most popular questions.

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