UMC404HD : Excellent interface for the price.

I got this device about 2 years ago to replace an integrated sound card on my PC, so I'm reviewing the product from this angle.

+I immeaditely noticed a much crisper and punchier audio from the headphone output, so highly recommended if you are looking for an USB audio card. Headphone output is quiet until roughly 75% of the volume dial, but after that there's some white noise, works well with lower impedance headphones (M50x and Shure SRH1540), it gets plenty loud.

Later on I added a headphone amp (Schiit Magni 3 Heresy) and it works really well as a DAC as well!

Also using to record a Audio-Technica AT2020 and a guitar, no issues such as hiss or latency with either one. Supports ASIO drivers without any issues.

+ Everything, really. It's a great product despite Behringer's old track record.

- Missing power button, but it has been "on" for the most part for a couple of years now without issues

- Sometimes drivers. Usually needs a couple of pc reboots to work after installing the driver after which there are no issues.

Great product for the price. If you don't need multiple recording devices, I'd recommend the 202HD.