Same with me. I bought a Behringer mixer, and the pots and preamps were noisy. The thing was unusable for recording. I bought it at Guitar Center and told the returns guy I was returning it for the above reasons. He said. "These are OK for live performance because there is already so much noise in a live environment no one notices. He told me that if I wanted to record, I bought the wrong brand and my unit was not broken, they are just like that and I'd have to spend about tripple what I paid to get what I needed. Of course they took it back for a refundBehringer is just a single company now owned by the Chinese "Music Tribe" company. It started a long, long time ago in Germany but that version of things is long gone.
![]()
Music Tribe - Wikipedia
en.wikipedia.org
I had a small mixer of theirs about 20 years ago and it developed noisy potentiometers within two or three years…not to mention that the preamps were terrible sounding. I didn't really know anything about the company but I swore off their stuff after that. You won't see an issue like that in a one month testing time period.
I think the preamps are probably the most important thing on these interfaces assuming that nothing on a particular unit is going to fail.
After that I learned the importent thing is how it sounds, not ther knobs and features or even the price. Buy the one with the best sound.
Good microphone preamps are the most important thing to look for in an audio interface. Buy Focusrite and be done with it.