Lightspeed Delta Zulu - Product Guide
Everything you need to know about the Delta Zulu.
This guide is designed to compliment the information on the Delta Zulu product page and provide more detailed information, further resources and helpful links.
The Delta Zulu is Lightspeed's flagship product and goes beyond being "Just A Headset" - Its a wearable safety device with features that are found nowhere else in the market.
Helpful Links:
- Lightspeed App - Apple App Store
- Delta Zulu User Guide
- Youtube Link - "What pilots are saying about Lightspeed Delta Zulu"
Life Saving - Life Changing:
Kanari® smart alert technology built right into the headset delivers audible warnings to you by measuring cabin carbon monoxide levels, helping to keep you and your passengers alert and safe. A built-in audio equalization system called HearingEQity® ensures crystal clear flight communication with your individual hearing profile created through an automated 12-frequency hearing test.
Personalisation:
The Lightspeed App also allows you to check the CO sensor data, create your own hearing profile, record radio conversations, playback transmissions, and archive flight recordings for post-flight briefing and training. The Lightspeed Delta Zulu is also the first headset to adopt the UAC plug, allowing you to connect to other devices directly from the headset for charging, data communications, and auxiliary audio.
Specifications:
| Weight | 14.9 oz / 422 g |
| Dimensions |
11.5 × 11.25 × 5 in 29.2 x 28.5 x 12.7 cm |
| Headset Plug Type | GA Dual Plugs, Panel Power (6-Pin), Heli (U-174) |
| Cables | Upper cable – 48"/122cm Lower cable – 21 1/8"/53.6cm |
Key Features:
| Built-in carbon monoxide sensor | Always on and always monitoring cabin carbon monoxide, the new CO sensor is optimally calibrated to provide audible and visual warnings at preset or user defined CO thresholds. | ![]() |
| HearingEQity™ for custom sound | Based on results from a custom 12-frequency hearing test in the new Lightspeed app, HearingEQity automatically adjusts the Lightspeed Delta Zulu to optimize every ATC call and conversation specifically for your individual hearing profile. Individualized profiles can be saved, and different headset users can switch profiles. | ![]() |
| Changeable battery packs | Easy-to-replace battery pack gives you the option of using rechargeable lithium-ion batteries or AA batteries. | ![]() |
| The Lightspeed App* | Allows you to check sensor data visually during flight, supplying you with instantaneous readouts and historical data. Review safety metrics from prior flights, record conversations, playback transmissions, draw diagrams, and archive flight recordings onto your phone or mobile device for post-flight briefing and training. | ![]() |
| UAC plug | The Lightspeed Delta Zulu is the first headset to adopt the UAC plug, allowing you to connect to other devices directly from the headset for charging, audio, and data transmissions. It can also be charged while flying via USB. The Lightspeed Delta Zulu has options for 4 cable configurations, from UAC to USB-A (included), USB-C, 3.5 mm and Lightning plugs (optional). | ![]() |
Making Aviation Safer
Personal Safety Data Partnership Program – An invitation to join the cause of reducing aviation accidents. By opting into the ANONYMOUS collection of sensor data from their headset, customers are providing data that will be used by General Aviation experts and scientists to improve the community’s understanding of safe piloting practices.
* The Lightspeed App is NOT REQUIRED to use the Lightspeed Delta Zulu ANR headset. For primary Android device users, an iOS device is only needed to set up your HearingEQity® profile along with carbon monoxide preferences and PPM settings for the first time accessing the Lightspeed App. You may use any iPhone or an iPad or other similar Apple device with iOS version 13 or higher. Your personalized hearing profile and CO alert preferences will be saved in your headset after you complete the set-up process, eliminating the need to have an iOS device for future use with your Lightspeed Delta Zulu.
Please note that while some additional convenient functions on the App will not be available without regular access to an iOS device, the important safety features of Lightspeed Delta Zulu are stored in the headset itself. Once set up, they will automatically deliver improved flying safety.
Other Features:
| Bluetooth | Bluetooth wireless technology with A2DP technology enables cell phone communications and stereo music streaming along with alerts from aviation apps. |
| Low-profile comfort | Weighing just 14.9 ounces (including ear seals, head pad and mic boom), Lightspeed Delta Zulu has a low-profile, stainless-steel headband that follows the curve of the head for more comfortable distribution of weight and side pressure. |
| High-performance fit | The Lightspeed Delta Zulu’s tapered performance ear seals are designed to hug the curve of the jaw for a natural fit, increasing comfort and clarity while also providing a better seal around eyeglass or sunglass frames. Cup cavities allow the entire ear to fit comfortably inside. |
| Durability and longevity | Made almost entirely of stainless steel and magnesium with durable cables built around a Kevlar core, Lightspeed Delta Zulu is designed to endure the harshest flying environments and last for years to come. |
| Superior quiet | The Lightspeed Delta Zulu delivers advanced active noise reduction (ANR) performance over a deep, broad range of low-frequency noise. The magnesium ear cups are superior at blocking out high-frequency noise. |
| Clear comms | The Dual Aperture Disc microphone provides greater noise cancellation for clearer, more intelligible communications. Exclusive, user-adjustable mic gain helps balance loud and soft voices in a multi-headset environment. |
| ComPriority™ | Never miss important radio communications with patented ComPriority, which automatically lowers the volume of any auxiliary device during radio or intercom transmissions. The soft mute feature gently eases music back in for a smooth listening transition. |
| Auto Shutoff™ | Lightspeed’s proprietary Auto Shutoff feature saves battery life by automatically shutting down the headset power when not in use. |
| Included accessories | Carrying case, single port wall charger, lithium-ion battery cartridge, AA battery cartridge, UAC to USB-A cable, a cord shirt clip, and a set of personalized icon chips to distinguish multiple headsets. |
| 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. |
| Available configurations | Dual GA, LEMO panel power, U-174. Others available by special order. Please contact Customer Support if your configuration is not listed. |
| 7-year limited warranty | The BEST in the aviation industry. Lightspeed stands by the quality of the Lightspeed Delta Zulu with a comprehensive 7-year warranty of materials and workmanship. |
Technichal Specifications:
Models
Lightspeed Delta Zulu – GA Dual Plugs – SKU: 4074
Lightspeed Delta Zulu – Panel Power (6-pin) – SKU: 4075
Lightspeed Delta Zulu – Heli (U-174) – SKU: 4079
General
Battery power supply: 3V, two AA batteries
Weight: 14.9 oz. (including ear seals and mic boom)
Panel aircraft 8-40 VDC
Headphone
Transducer: 40mm moving coil
Frequency response: 20 Hz-20 kHz Nominal impedance @ 1 kHz:
OFF—Mono: 200 ohms, ON—Mono: 280 ohms
OFF—Stereo: 400 ohms, ON—Stereo: 560 ohms
Microphone
Transducer principle: Noise-canceling electret
Frequency response: 200 Hz-6000 Hz
Maximum SPL: 114 dB
Terminating impedance: 220-2200 ohms
Operating voltage: 8V-16V DC
Bluetooth Enabled Phone: Yes
Bluetooth Streaming Music: Yes
Warranty Information:
It is reccomended to register your headset with Lightspeed after purchase, this will help you with any furture warranty claims and also let you manage your service history and request general support. Sign up to also recieve important updates, offers and event invitations.
Go to: lightspeedaviation.com/my-account/ to sign up
Lightspeed Delta Zulu Videos:
- What pilots are saying about Lightspeed Delta Zulu - Youtube Link
- HearingEQity® for Lightspeed Delta Zulu - Youtube Link
- A Story of CO Poisoning - Youtube Link
- Lightspeed Delta Zulu's CO Sensor - Youtube Link
- Lightspeed Delta Zulu Power Management - Youtube Link
- How HearingEQity® Works - Youtube Link
App Screenshots:
| Lightspeed App- Home Page (iPad/Dark Mode) | Lightspeed App- Equalizer (iPad/Dark Mode) | Lightspeed App- Recording (iPad/Dark Mode) |
![]() |
![]() |
![]() |
If you have any other questions, need more information or want to contact us for any other reason, we are here to help - Contact Us






