Review on Neoteck Portable 3.5Mm Headphone Amplifier With Bluetooth 5.0 Receiver, Two-Stage Gain Switch, 16-150 Ohm HiFi Earphone Amp, Aluminum Matte Surface by Jimmy Garcia

I own the precious version of the Neoteck Headphone Amp which I will say as a basic headphone clean signal amplifier I will give 5 stars. The biggest disappointment with this one is the quality of the Bluetooth connection. It's not lossless, I'm not even sure is apTX, it is Bluetooth 5 however. As a basic headphone amp it seems to work just as fine as their previous version, meaning using a wired source such as your phone's headphone jack (if it still has one), you can plug a 3.5 cable into this amp, and plug some of your High End headphones like my AudioTechnia's or Sennheiser Studio K 240 MK II's into the headphone amp and it will provide cleaner, louder, and more accurate sound than would come from your phone or tablet, or even mini portable music production devices like a pocket operator.Bluetooth Audio Quality:I have been using the previous (non Bluetooth amp) version of this product along with a few years old Anker Bluetooth transmitter/receiver paired with my Sennheiser's and my laptop for gaming. I was so impressed with the amplification of the Neoteck using it this way that when I saw there was a Bluetooth version available I jumped on it, because I could remove the Anker BT device and just use this with my headphones. However, the audio quality and clarity of the Neoteck BT amp are no where near the Anker portable BT in terms of quality. Everything sounds muffled and compressed, and when you are gaming for instance you don't get the same audio separation that I got from the Anker BT. You can choose not to use this amp as a BT device but that defeats the purpose of buying it, and you should just stick with the previous version. Another thing is even if you don't pair its built in Bluetooth, it seems like there is no way to disable the built in Bluetooth device , so this device seems to always be in pairing mode, potentially running down the battery, and also causing unnecessary radio interference, if you already have a fair amount of BT devices in your home already.Final Thoughts:As a basic headphone amp like I previously said the Neoteck seems to be solid and the audio signal is clean and the previous version is probably the best mini headphone amp you can buy at its price range. With this version, don't let the BT feature fool you, its probably better to use a separate BT device plugged into this and get the previous version (still available when I'm writing this) for currently about 10- 15 dollars cheaper. If Neoteck comes up with the same amp but a higher quality audio BT codec i may consider it, but for now this one may be returned, there are better options on the market for a slightly higher price (with buying the old Neoteck plus a different version apTX Bluetooth receiver) but with much better audio to power your higher end studio headphones using Bluetooth if thats your goal.