Clarity Aloft's Flex and Pro Plus are lightweight in-ear aviation headsets built around passive attenuation rather than active noise cancellation. Both are FAA TSO-certified, battery-free, use dual balanced-armature speakers and a dual-electret microphone, and share Clarity Aloft's published 29–47 dB attenuation range. The real choice is between the Flex's adjustability and the Pro Plus's more traditional professional-duty construction.
Quick answer: choose the Flex if you value an adjustable headband, fold-flat storage, and the ability to place the microphone on either side. Choose the Pro Plus if you prefer its robust wiring and stable boom design for regular professional use. Neither model includes Bluetooth; Clarity Aloft's Link model is the Bluetooth-equipped option.
Clarity Aloft Flex vs Pro Plus: Key Differences
| Feature | Flex | Pro Plus |
|---|---|---|
| FAA TSO certification | Yes | Yes |
| Published noise reduction | 29–47 dB | 29–47 dB |
| Head weight | Under 2 oz | Under 2 oz |
| Speakers | Dual balanced armature | Dual balanced armature |
| Microphone | Dual electret; can be worn left or right | Dual electret; stable professional boom |
| Adjustable headband | Yes | No |
| Fold-flat storage | Yes | No |
| Bluetooth | No | No |
| Batteries required | No | No |
| U.S. list price checked Sep. 2026 | US$795 | US$775 |
What the Flex and Pro Plus Share
Both models use Clarity Aloft's in-ear architecture with Comply canal tips instead of full earcups. The current manufacturer matrix lists the same dual balanced-armature speakers, dual-electret microphone architecture, music input, published 29–47 dB attenuation range, head weight under 2 oz, and no-battery operation for both.
They also share FAA TSO certification. The FAA explains that a Technical Standard Order defines a minimum performance standard for an article and that TSO authorization is a design and production approval. It is not the same as blanket approval for installation in every aircraft.
What Makes the Flex Different?
The Clarity Aloft Flex is the more adjustable model. Its headband can be resized, the microphone can move from the left side to the right, and the frame folds flat for storage. Clarity Aloft currently lists it at US$795.
Those differences matter if several pilots share equipment, if your preferred boom side changes with cockpit layout, or if compact storage is important. They do not indicate stronger noise attenuation; Clarity Aloft publishes the same attenuation range for Flex and Pro Plus.
What Makes the Pro Plus Different?
The Pro Plus is positioned for professional pilots and emphasizes robust wiring and an exceptionally stable microphone boom. Clarity Aloft currently lists it at US$775.
The Pro Plus is less configurable than the Flex, but that simplicity may suit pilots who want a fixed setup and do not need the headband or microphone position to change between flights.
Passive Attenuation, Not ANC
Neither Flex nor Pro Plus uses active noise cancellation. Noise reduction comes from the seal of the canal tips and the passive acoustic design. Clarity Aloft publishes a 29–47 dB attenuation range, which varies by frequency rather than acting as one flat reduction number across all cockpit noise.
That is an important distinction from over-ear ANR headsets. A passive in-ear design does not need batteries, but correct tip fit becomes central to both comfort and attenuation.
Do the Flex or Pro Plus Have Bluetooth?
No. Clarity Aloft's current feature matrix lists Bluetooth music and phone use only on the Link model, not the Flex or Pro Plus. The older version of this page incorrectly attributed Bluetooth to Pro Plus; current manufacturer documentation does not support that claim.
If Bluetooth is a requirement, compare the Link or Clarity Aloft's separate Connect adapter rather than assuming that every model in the range has wireless phone integration.
Fit and Comfort Depend on the Canal Tips
In-ear aviation headsets avoid the side pressure and heat of full earcups, which can be useful with glasses, hats, or limited cockpit headroom. The tradeoff is that the canal tips must fit correctly, and some pilots simply do not like wearing foam tips for long periods.
Clarity Aloft includes multiple tip sizes with both Flex and Pro Plus. The manufacturer also sells replacement Comply tips, so ongoing tip replacement is part of ownership rather than an optional cosmetic accessory.
Why TSO Certification Matters
Clarity Aloft markets both Flex and Pro Plus as TSO-certified for professional aviation use. That is a concrete differentiator from the company's Classic and Link models, which the current feature matrix does not mark as TSO-certified.
TSO status should still be interpreted accurately: it indicates compliance with the applicable FAA minimum performance standard and authorization to manufacture under that standard. Operators and aircraft installations can have additional requirements.
Flex vs Pro Plus: Is the Price Difference Meaningful?
At the U.S. prices checked in September 2026, Flex was US$795 and Pro Plus US$775—a US$20 difference. At that gap, price is less important than the mechanical differences.
Pay the extra for Flex if movable microphone placement, adjustable fit, and fold-flat storage solve a real cockpit or travel need. Choose Pro Plus if its fixed professional configuration already matches how you fly. Recheck live prices before ordering because manufacturer pricing can change.
Which One Fits Which Pilot?
- Flex: pilots who want the lightest, most configurable Clarity Aloft format, especially when microphone side, headband fit, or compact storage matters.
- Pro Plus: professional pilots who want TSO certification, robust wiring, and a stable fixed boom without needing Flex-specific adjustability.
- Neither: pilots who require built-in Bluetooth. In the current range, that feature belongs to the Link rather than Flex or Pro Plus.
Frequently Asked Questions
Are both Clarity Aloft Flex and Pro Plus TSO certified?
Yes. Clarity Aloft's current feature matrix marks both Flex and Pro Plus as FAA TSO-certified models.
Do Flex and Pro Plus use active noise cancellation?
No. Both rely on passive attenuation from their in-ear canal-tip design. Clarity Aloft publishes a 29–47 dB attenuation range by frequency.
Does the Pro Plus have Bluetooth?
No. The current Clarity Aloft matrix lists Bluetooth on the Link model, not Pro Plus or Flex.
What is the main reason to choose Flex over Pro Plus?
Flex adds an adjustable headband, fold-flat storage, and a microphone that can be worn on either side. Pro Plus instead emphasizes robust wiring and a stable professional boom.
