AIYIMA Audio H1 Mini Portable Hi-Fi Headphone Amplifier JRC5532 OP AMP 3.5mm AUX Headphone Amplifier for MP3 Player Tablet Phones

Good Product, I can hear the difference in the way music sounds now. I dont have any expensive headphones which can handle the output but on a temperance volume i can hear the subtle differences when hearing to FLAC music on my android phones. Used it with headphones such as PTron and some gaming desktop headsets.Battery seems to standby now as its new, but unsure in the long run.

Compact and handy as a headphone amp for those headphones with a higher impedance. Only issue is that the volume dial caps off around 3/4 of the turn and doesn't get any louder... maybe my source is a bit poor...!

I am highly satisfied with Aiyima H1 amplifier. I used it with my Beyerdynamic dt 990 pro limited edition 80 ohms, dt 770 pro 80 ohms, Sennheiser hd 560S and found that Aiyima H1 amplifier did its job well. Now I am using it with my Hifiman edition xs and I am happy. I can easily recommend it. It looks cute too and is quite compact and portable. Layout is simple and user friendly. There are separate LEDs for charging and amplification. For pure amplification upto 300 ohms it should do its job well. Quite recommedable I must say.

Well the Aiyima H1 surprised me a lot in terms of its power delivery. It just opened up the sound and delivered that thump and rumble in the low end. On some tracks the highs might come across as a little sharp but give it time (burn-in). I have used it to power IEMs and some full-size cans. I highly recommend this product for its asking price.