A bit overpriced - especially if you buy it at full price from their website. I'm still not sure if it is usable with the new Garmin VIRB Ultra cameras? The do not include any instructions, or schematic of the wiring of this harness - so it's very hard to verify its' usability in a preexisting circuit. I had to get out my own test meter and draw up my own schematic.

This cable works great -- when it works. I have purchased two of these cables to use with my GoPro Hero 4 Black to record my flight lessons. Each cable worked for about three months and then suddenly stopped feeding audio to the GoPro. While troubleshooting this problem I discovered the connector that plugs into the Mini-USB Port on the GoPro seems loose, although I can't be sure because that connector is sealed. Apparently, this connector is unable to cope with the stresses in the cockpit of a general aviation airplane.

I bought this at Christmas time to record my flights with. I guess there is a short in the cable somewhere because the static I get on the video makes it unwatchable with the sound on anyway. And yes it is the cable because the same camera/aircraft/headset combination works just fine with a friends cable (different brand). Shame it took me a few weeks to find the problem and missed the return window because I'd like to think they aren't all this bad...?

Initially, the performance of this cable was excellent. Real-time and recorded audio quality was crisp and clear, and while I never used the charging feature, audio functionality was flawless. Reliability suddenly changed during a night flight, when headset audio was lost on downwind while waiting for a landing clearance. A quick switch of the jack out of the splitter and directly into the plane remedied the situation; however, I was fortunate to be the only aircraft in the pattern. Thinking that the issue was a loose connection or an inadvertent disconnection, I continued use of the cable on subsequent flights. The frequency of random audio loss worsened however, and the cable now stays on the ground. For context, the cable has no kinks, bends, jacket damage, or other signs of wear. The period between purchase and failure was less than six months, and multiple bench and alternate aircraft/headset tests were run in an effort to troubleshoot. I use a Bose A20 headset that is a little over one year old, and performs flawlessly when connected directly to the aircraft. While failure of the cable is frustrating, the lack of support response from Nflight is what finally prompted this review. Based on the multiple positive reviews on this site and glowing recommendations from people I fly with, I have no doubt that my cable is simply a lemon and not representative of the product itself. That being said, I have yet to be presented with an opportunity to have the manufacturer assist with a determination.

Really happy with this item, feels like a quality product that will last for a long time.
I use this to record the audio to my GoPro Hero 4 Silver during my PPL lessons inside various PA-28 Piper Warriors.
I mount my GoPro Hero 4 Silver to the aircraft ceiling centrally between the front pilot and co-pilot seats (near the air vents)
The lead is more than long enough to reach to the rear seat headphone ports, even inside the PA-28 Piper Warriors that have the headphone ports located behind the rear seat.
This lead also allows you to connect a power supply in tandem with the audio connection, I use this to connect a USB battery pack which vastly extends the battery life of the GoPro Hero 4 Silver.
The audio is super clear with no interference.
A must have for student pilot's that want to record audio to their GoPro's.
I purchased this from the UK via the US Amazon site and product arrived within 5 working days.
Highly recommended.