Neoteck Portable 3.5mm Headphone Amplifier Two-Stage Gain Switch, 16-150 Ohm, Aluminum Matte Surface

HO- LEE COW. Best $$ I ever spent. My headphones SING with this amp. I haven't turned it past 6- EVERYTHING is exactly the volume it needs to be, for my taste. I like my tunes loud, and this thing absolutely delivers. AND it doesn't need a continuous power source. Just charge it and tune out the entire PLANET! LOVE this thing. Don't hesitate to buy!

Amazing peace of audio for those who want to listen to music , old school volume.

Nothing fancy, but does the job. I use it to connect earbuds to my electric cello. When plugging earbuds into the port in the instrument, the signal is too weak to hear much in the earbuds. The little amp boosted the sound and was small enough to hang from the port. Very simple -- volume control only.

Beautiful aluminum unit that works great at boosting the audio on my mini monitor screen!

Before getting this NeoTeck DAC amp, I first purchased the Fosi DS2 USB-C headphone amp to help drive signal from my HiBy R3ii DAP to some Edifier STAX 3 planar magnetic headphones. I was deeply disappointed! The Fosi didn’t seem to do a thing to enhance the listening experience. After doing some research I learned that the Fosi DAC Amp only puts out 128mW at 26-32 Ohms (over 3.5mm unbalanced output). So I returned that and picked up the Neoteck Portable battery powered headphone Amp which is rated at 250mW over 3.5mm outs. The difference was quite noticeable and I’m very pleased with this amp. It truly brings out the rich texture and full sound of the Edifiers STAX 3 at HALF THE PRICE!! Now, I'm not the audiophile who can comment on the sound qualities of the DAC itself but I know my HiBy DAP (playing strictly FLAC files) should play beautiful CD quality sounding music that is supposed to be more faithfully portrayed by my planar magnetic headphones. But it's only after I started using them with this NeoTeck amp that I KNOW I'm hearing everything I should. Power makes a difference.

Works well but adds audible noise

The size of this amp makes it really easy to carry around. The nob it has to control volume works seamlessly well. Considering how cheap this is it's definitely worth your money. I don't know much about if there's bluetooth connections because mine is plugged into my PC. I will say the connections for the PC are very well made. I would give advice to whomever does purchase this. I wouldn't have it plugged in an charging WHILE you're using it or all you'll hear is static. The battery stays charged for a good amount of time (I've used mine for about 10 hours now and it's still perfectly fine on battery).

Your headphones are being held back without this device. And you are not getting the most experience your headphones have to offer without it