I am using this amplifier with 300ohm headphone. I recommend it absolutely. But connection cable is crooked. Because of that just 4 stars.
The seller shipped quickly and the item arrived quickly. It took about 2 weeks from China to Canada using Aliexpress Standard Shipping. The item was not packed well. It came in a small box which had a dent in it and there was no padding however the amplifier seems to be working fine. The back panel does not look exactly like the description photo; the gain switch is horizontal instead of vertical. I don't care because it doesn't affect the use but I'm only pointing it out because it is different from the description. Also the front and back panels have a bit of a gap which you can see clearly when the LEDs are on. It's a slight imperfection in quality but, again, it doesn't affect the use. It does bother me a little because it doesn't look nice but for the price paid, the amplifier works as advertised so I can't complain.