Neoteck Portable 3.5mm Headphone Amplifier with Bluetooth 5.0 Receiver, Two-Stage Gain Switch, 16-300 Ohm HiFi Earphone Amp, Aluminum Matte Surface

I bought this for my old 2007 Toyota Solara SLE Convertible with the "premium" JBL Nav head until. I found the Aux amplification for this JBL Nav head unit was fairly low (I have a Solara is non-nav to compare it to) and while the head until has Bluetooth, it is only for phone calls (odd decision on JBL/Toyota).First off, It is interesting that it Bluetooth in this Amp is ready to connect as soon as it is powered on, while that surely makes it easy to connect to, I wondering about other random jerks connecting or being able to have a passenger to connect instead of me... I guess time will tell.I have the amp set to low (L), and I just turn it up all the way when powering on, and it is more than enough to overcome the Solara's deficient JBL Nav amplification on the Aux input. I do have power supplied (all times) and while I have a BESIGN Ground Loop Noise Isolator between this Bluetooth Amp & the Aux, I am hearing no whine/buzz. The "old" Amp and separate Bluetooth units I was using before, I did hear a very slight annoying power whine, even with the ground loop noise isolator. It seems all these little amp units could be designed for ground loop noise isolation, it couldn't add that much to the final cost. Anyways, buying a separate one like I did months back, isn't a big deal either.I now have less things to power & various audio/power cables to run in the Aux cubby area - so the cubby area is much cleaner. The size is perfect for the cubby too and as far as I am concern it sounds great. You can't really see it in my cubby, and I love that.

Why did you pick this product vs others?:This little amp is of substantial build and quality. The price point for this amp is amazing for the quality, simplicity of use/features, and even had a small LED display that lights up the manufacturer's logo that rotates colors. The Bluetooth functionality and connectivity is seamless. The extra power/amplification of the aux line signal before going into the aux/input in factory CCC BMW headunit is amazing. The factory Logic 7 sound processing system was already good, but this little amp makes the factory system beyond better but exceptional. The extra clean power makes the drivers / speakers sound so much cleaner and tight across the whole sound stage. If this is the "junk" that China makes, then this example of junk = quality at a remarkable price in my book.

Pros:Amplification is good with no noiseCan do bluetoothBattery does last a long time nearly all dayDecent rangeCons:The gain switch does very little, but for me this isn't an issue as the max vol is far more than enoughIt can do bluetooth SBC-XQ (the higher quality higher bitrate one) but set on this is stutters every minute no matter the computer or phone its paired with or the range so I'm docking a star as ill have to use normal quality SBCBluetooth pairing takes no passcode so its very easy to pair

A straightforward product that turns any wired earphones into Bluetooth headphones. Plug your headphones into the device, connect it to your Bluetooth source and you have audio. The volume control is quiet and can accommodate many types of headphones.Likewise, plugging in a wire from a music source turns the unit into a simple headphone amplifier. Surprisingly useful and decent quality.The large battery seems to last forever, but obviously will need recharging. It will certainly last through any flight.This is an excellent product for people on the go who like to listen wirelessly. It is not an ultra high-end product, nor does it boast the very latest Bluetooth protocols, and the DAC is not state of the art. But it also doesn't cost hundreds of Euros. It is a good example of sensible engineering that sounds perfectly fine. I love mine, and find it useful to keep in my jacket when I go out. The battery is ample, the controls are easy to use and the electronics are quiet and the sound is excellent. I plug in my earbuds and I'm wireless.

I rarely give 5 star reviews. This one is well deserved and was hard earned.I was looking for a device that could receive Bluetooth audio and feed it to the auxiliary input in my work truck.The other options, while functional, left the audio sounding flat, weak, and honestly underdriven. I was seriously wishing I could get away with installing an amplifier.With this, I got my amplifier on the input side without a permanent installation or anything that could get me in trouble.The result was clean, powerful, boosted sound that didn't sound like it was falling on its face.The instructions say not to use it plugged into a power source due to system electrical noise. This does happen, but with an estimated 8 hour battery life and a work day that can run 16 hours sometimes, this was not an option.Using an inline noise filter between this Amp and the stereo input really solved that problem for me.I can't believe I have only had this little guy for a year.This little device, about the size of a deck of playing cards is well built with an aluminum body instead of cheap plastic construction. As I drive a concrete mixer in some extreme circumstances sometimes, rough is a necessity. This fits the bill, and doesn't break the bank to do the job.I highly recommend it, and will buy another one again so I don't have to keep moving it around.Update to my review, after 15 months, the right channel quit working.After opening it up, I found that some of the solder joints between the volume control knob's board and the main board were broken. After heating them up and reflowing the solder, it works as good as new.Update number 2 to my review. I have had this little guy now for nearly 3 years with no further issues since fixing the broken solder joints. As of today, May 14, 2025, I have had the unit for 34 months.