NeoteckHiFi Headphone Amp, Portable Headphone Amplifier with Bluetooth 5.0 Receiver and Gain Switch, 3.5mm Input/Output, 16-300Ω Headphone Amplifier for MP3 MP4 Phones Digital Players etc

Yes, "Impressive". Wired & Bluetooth both excellent with enough amplification to drive Sennheiser HD 660S2[300ohm] headphones from laptop even at low gain. Sound quality seems neutral with no noticeable distortion, Good solid well finished aluminium case and nice touch that illuminated eoteck logo subdued and not distracting.If affordable, well worth the purchase.

A very inexpensive upgrade . You can hear the difference, even with mid-priced cans. I tested this a pair of AKG, Beyer Dynamics and Sony XM5 headphones. It is not very fond of wired systems. The DAC doesn’t make sows’ ears into purses, and my £12.99 pair of headphones bought at a service station still sound awful. However, it really made the Beyer Dynamics sing, with tighter bass control and clearer vocals. I wouldn’t recommend for Hi-Fi , as they didn’t do the Sonys any favours,But I’m guessing that people who buy the best in headphones wouldn’t need a DAC or would buy a much more expensive one.I tested this alongside a FIio amp/ DAC and a Hip-DAC 2. Yes the Hip-DAC wins in test every time but at a price. However, this is a very worthwhile investment if you want to look the part but your bank has lost all patience with you. On the other hand, it has Bluetooth connectivity and is discrete enough to hide in a pocket.Use with mid-priced headphones for a real treat; don’t expect miracles with cheap cans and, if you are considering expensive ‘phones, you need to factor in the cost of a DAC in your budget. Have fun!

In terms of function and design - it's perfect, excellent. Bluetooth to the mobile phone, plug in headphones to the device, just one lead, job done. Good power. Better than the non-Bluetooth version as that means two leads instead of one. The volume dial (design/idea) is perfect and the device size, it's functions, the power, the volume dial - all perfect and really works for me.Not having experienced the sound quality of different (more expensive) devices, however this device, for the cost, is at least very good, I was not found to be wanting with regards to volume or sound quality.I did unfortunately have some longevity/wear and tear issues, so would recommend to treat like a brand-new, expensive mobile phone with a large screen: be very careful with it. I use this at work in a Warehouse and did have some seemingly premature longevity issues, however I'm pleased to say that the supplier/seller actually do care about their customers' satisfaction and I was pleasantly surprised when the seller reached out to me about the issues I experienced, and resolved/made better of the issues I experienced, so whilst the devices' robustness/sturdiness is good but perhaps not great, I feel this was more than made up for with the suppliers' excellent customer service, so at the very least you can be assured of good sound quality and power, and excellent customer service from the supplier.Whilst I did look around at (more expensive) alternatives, I have to say that no other amplifier actually met my needs as much as this one did (despite some costing a couple of hundred pounds), and in fact this device remains the most fitting and appropriate device for me. Shall be extra careful with this one and hope it lasts a long time!My thanks to the supplier/seller for their great communication and service.

I am satisfied ,working well ,good sound

I have tested this with a pair of grado RS2e and it drives then ok. At maximum volume there is some noise from the amplifier without signal but turning down the volume solves this. You might notice this on quieter tracks if you like it very loud. Bluetooth also adds a more noise which my Grados pick up but on less revealing headphones you probably wouldn't notice this much. It is a bit unfair plugging in headphones that cost £600 into an amplifier of this price. Sound is louder and generally better quality overall using the cable option instead of BT, but less convenient. Sadly it does not support aptx in any form. For me it is let down by an average noise floor. So I decided to return it. Audiophiles look elsewhere.I am sure they could improve the noise floor with some tweaking and component upgrades especially that screen the Bluetooth RF from the audio path.

Quality little Bluetooth portable amp it's quite small in size but packs a punch. I have the volume on number 8 you can't have it higher cos it starts to break up. Has for value you can't grumble. I use Dr dre beats Solo headphones and it sounds awesome. Battery performance is excellent lasts over 7 hours even on continuous high volume. Would highly recommend the volume knob is of good quality i have had no issues with it unlike some reviews have mentioned. Takes roughly 3 hours to charge

So about one year ago I bought the neoteck kt106 to use it in my car . I was surprised about the really good quality of the sound. But unfortunately one channel stopped working so I got a replacement. The sound quality is so low you barely can hear the highs and mids.

Firstly,I have hearing damage,hearing loss and tinnitus and I was therefore very pleasantly surprised and impressed by its performance,improving the situation markedly. The bluetooth connection means that the input device can be left on charge,with no interference,but don't charge the H/P Amp at the same time.This doesn't have all the bells and whistles of the top end headphone amplifiers,but neither does it carry their price tag.Sporting 3.5mm in/out Jacks,lo/hi boost switch,vol knobs incorporating on/off switch,usb C charging port and that's it. Sound quality is quite acceptable, with crisp top end and bass lift.All in all it equates itself very well indeed.