Lightspeed Delta Zulu Headsets: The Next Generation of ANR Headsets for Pilots

Headsets have come a long way in the last 25 years or so. Indeed, numerous fine legacy-style headsets remain on the market, and many pilots and aircrew members continue to use them with great success. But the cockpit is a crowded, busy place with lots of distractions on the best of days; on the less optimal days, you need every advantage you can get. Headset users need a good ANR aviation headset with Bluetooth wireless technology and other great features to maximize their focus on deconflicting calls and hearing audible warnings while listening for ATC comms.  

The Lightspeed Delta Zulu ANR series of headsets is a great line of aviation ANR headsets that offer custom sound, pair with the Lightspeed app for a range of features, and are an all-around great choice for headset users of all types. 

Greenwood Aerospace, our premier procurement experts for Lightspeed products, can help your federal agency or military aviation organization source headsets. You can contact us directly at gsasales@greenwood.aero or give us a call at 580-865-6000 or 833-GSA-EBUY (833-472-3289).

Introduction to the Lightspeed Delta Zulu

The Lightspeed Delta Zulu headset is a major leap forward in headset technology. This series is designed for pilots who need more than just noise reduction; instead, it combines premium ANR technology and performance with Bluetooth wireless technology for stereo music streaming, soft mute feature, a flexible mic boom, changeable battery packs, and the ability to connect to your mobile device and not miss important radio communications. 

Unlike older Lightspeed headsets and their competitors, the Delta Zulu ANR headsets go way beyond making the cockpit quieter. It integrates important safety features, including monitoring cabin carbon monoxide levels, personalized EQ adjustments through the Lightspeed app, comfortable magnesium ear cups, and smooth listening transitions for seamlessly switching between ATC calls and intercom, music, or podcasts, and providing traffic alerts. For pilots flying long cross-country legs or operating in noisy rotary cockpits, it gives you both quiet and peace of mind.

The Delta Zulu is the next-generation ANR headset for pilots. It’s a headset that enhances comfort, safety, and crystal-clear communication, even in the most demanding conditions.

Key Features of the Delta Zulu Headset

The Lightspeed Delta Zulu ANR headsets are designed for a wide range of cockpit environments, from noisy general aviation (GA) aircraft to really noisy rotorcraft and turbine/jet aircraft. Here are the key features that make them a winner:

Lightspeed Delta – Product Specifications

Lightspeed Delta – Specifications

Product specifications, compatibility, and GSA procurement links

Category Specification Details
Models GA Dual Plugs SKU: 4074 – Standard for most fixed-wing aircraft GSA
Panel Power 6-Pin SKU: 4075 – Direct-to-panel power option GSA
Heli U-174 SKU: 4079 – Rugged design for helicopter operations GSA
General Battery Power Supply 3V, two AA batteries (rechargeable lithium-ion cartridge available)
Weight 14.9 oz. including ear seals and mic boom
Panel Aircraft Compatibility 8–40 VDC
Headphone Transducer 40mm moving coil
Frequency Response 20 Hz – 20 kHz
Nominal Impedance at 1 kHz (OFF – Mono) 200 ohms
Nominal Impedance at 1 kHz (ON – Mono) 280 ohms
Nominal Impedance at 1 kHz (OFF – Stereo) 400 ohms
Nominal Impedance at 1 kHz (ON – Stereo) 560 ohms
Microphone Transducer Principle Noise-canceling electret
Frequency Response 200 Hz – 6,000 Hz
Maximum SPL 114 dB
Terminating Impedance 220–2200 ohms
Operating Voltage 8–16V DC
Connectivity Bluetooth Phone Yes
Bluetooth Streaming Music Yes
Universal Accessory Connector (UAC) Auxiliary audio, recording, and charging
Included Accessories USB-A cable and single-port wall charger

The Lightspeed Delta headsets are technologically advanced and packed with features that make them a favorite of pilots from all aircraft types. 

Audio Quality and Customization

One of the best features of the Light Speed Delta Zulu line of headsets is the ability to tailor audio profiles for different headset users. 

These headsets incorporate a personalized sound equalization system, enabling each pilot to create custom sound profiles that adapt to their preferences and the way they prefer to hear information. With personalized icon chips stored in the Lightspeed app, pilots can distinguish subtle differences between loud and soft voices, providing crystal-clear flight communication, arguably one of the top three safety features in flying. 

In the modern day, cockpit comms are no longer limited to radio transmissions. For comms outside of the intercom, these headsets integrate Bluetooth streaming music and phone comms. You can stream music or take a hands-free call while flying. 

The Lightspeed Delta Zulu headsets are much more than an ANR headset; they are a communications hub in the cockpit. 

Technical Specifications

From a technical standpoint, the Delta Zulu is built to last and practical for daily use.

  • Rechargeable battery: Lithium-ion battery cartridge with long-lasting performance and easy recharging via USB-A cable and single-port wall charger.
  • AA batteries: For redundancy, pilots can swap to an AA battery cartridge for continued use.
  • Battery packs: Changeable battery packs for extended mission endurance and quick turnaround between flights.
  • Mic boom and cord shirt clip: Adjustable for comfort and ease of use, reduces cable clutter.
  • Durable cables built to withstand bending and tugging in tight cockpits.
  • Weight and side pressure are optimized for long-term wear, so the headset rests lightly across the entire ear.

Safety Features

Headsets are now a safety apparatus inside the cockpit, connecting pilots to the data they need most, when they need it the most. These are the first headsets ever built with an integrated CO sensor to monitor cabin CO levels and warn pilots. 

Pilots can also check CO levels in the new Lightspeed app, record radio conversations, monitor CO levels in real time, and even verify headset performance. 

Comfort and Fit

Comfort is vital for pilots because, no matter how packed with features or how good a headset sounds, if it hurts to wear, it will be returned. 

Lightspeed understands the importance of comfortable headsets, which is why they have made it a priority in their designs. Here are some of the best features in the Lightspeed Delta Zuly ANR headsets for comfort:

- Ear seals contour around the entire ear for pilots who wear glasses.

- Stainless steel headband distributes weight and side pressure evenly.

- Magnesium ear cups provide strength while keeping the headset lightweight.

- Soft mute feature for smooth listening transition, reduces fatigue on multi-hour flights.

- Built to endure with reinforced hinges, durable cables, and ruggedized construction for reliability.

The Delta Zulu Lineup at a Glance

Lightspeed Delta Zulu – Product Listing

Lightspeed Delta Zulu – Product Listing

GSA Advantage procurement reference

Brand Part Number Mfr Part Number Product Description UOM GSA Link
Lightspeed 4074-DELTA-ZULU 4074-DELTA-ZULU Lightspeed Delta Zulu ANR Headset, GA Dual Plugs EA View on GSA Advantage
Lightspeed 4075-DELTA-ZULU 4075-DELTA-ZULU Lightspeed Delta Zulu ANR Headset, Panel Power, 6-Pin EA View on GSA Advantage
Lightspeed 4079-DELTA-ZULU 4079-DELTA-ZULU Lightspeed Delta Zulu ANR Headset, Heli, U-174 EA View on GSA Advantage

How Delta Zulu Compares to Other Aviation Headsets

So, how do these compare to the competition? 

Compared to passive noise-reducing headsets, these reduce far more noise, so you can easily catch ATC comms. 

Compared to their main competitors (Bose and David Clark), the Lightspeed Delta Zulu ANR headsets offer a host of unique capabilities. 

  • Only Lightspeed monitors CO levels through the built-in sensors. 
  • Only Lightspeed offers audio customization through a phone or mobile device app. 
  • Lightspeed offers multiple battery options so you won’t ever get caught high and dry without juice. 
  • Seamless Bluetooth connectivity for both work and play in the cockpit. 

Procurement and Ordering Options

The Lightspeed Delta Zulu headset is available exclusively through Greenwood Aerospace on GSA Advantage, making it easy to purchase for government, defense, and public sector agencies.

- Single cases for small fleets: Ideal for training departments or small units.

- Bulk or pallet orders for agencies: Discounted pricing for large volume purchases.

Greenwood Aerospace offers rapid delivery and procurement support to fleet managers balancing performance, compliance, and cost. For bulk purchases or any questions, please email Greenwood Aerospace at gsasales@greenwood.aero or call us at 580-865-6000 or 833-GSA-EBUY (833-472-3289).

Why Choose Greenwood Aerospace for Aviation Headsets

With so many sources out there, what sets Greenwood Aerospace apart, and why should you buy Lightspeed headsets from us?

For one, we are a Native American-owned, HUBZone-certified small business with over four decades of experience in government procurement. We have deep expertise in aviation parts, aircraft consumables, and pilot gear, and we will make sure you have the equipment you need to complete your mission, from epoxies and sealants to headsets to brand-new Lycoming engines! We can source just about anything you need and will help you every step of the way. 

Greenwood Aerospace is U.S. Department of State ITAR-registered, which allows us to partner with large defense contractors on various military initiatives for the export of ITAR-controlled items. We hold the following certifications:

UEI: KVSUYYSJS174

DUNS: 604006874

Cage Code: 2Y735

ITAR DDTC Export Compliant

AS9120B QMS Certified

NAICS: 488190, 336413, 332722, 336411, 336413, 481212, 532411