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 Robert Layne

I have an older car without stereo Bluetooth audio streaming, so for the longest time I’ve been using a blackberry music gateway and plugging that into the auxiliary 3.5 audio input.That works most of the time, however sometimes, specifically with YouTube playback, the volume can be quite low, even when turned up to the loudest setting on both my iPhone and the car radio volume dial.This solves that problem, and has a very convenient high and low gain switch!That’s a real nice touch, as I typically will keep it on low gain, but then a quick flip into high when I need to play something with lower volume from YouTube or elsewhere.The one drawback is that this thing is battery powered, which is not ideal for use in a car, since your phone won’t automatically disconnect when you turn your car off.There is however a very easy solution to this problem — you can simply open up the chassis / case of this thing and disconnect the battery from the board, which is exactly what I did.The screws are T6 I think, they were very difficult to remove, but I eventually got them out. I wish there was a convenient switch to turn the battery off!But oh well, this works and it works exactly the way I want it to.Now when my car is off, the amp / BT transmitter automatically turn off and my phone automatically disconnects from it, and vice versa when I turn my car on.I keep it plugged in to a car lighter USB port which automatically turns it on when I turn my car on.I subtracted one star for having a Micro B connector instead of type-c, and also for not having an easier way to turn the battery off, and for it being kind of difficult to get the screws out and open up the chassis…but other than that, this product is a great value and does exactly what I need it to do.I do have concerns about longevity, especially with the stupid Micro B connector, but I suppose I’ll just have to be extra careful.The audio quality is just as good as with the blackberry music gateway, it sounds great.I am also using it with a ground loop noise isolator, which is exactly what I used with my blackberry music gateway too.