Manjaro with realtime kernel: 5.4.61-rt37-MANJARO, Performance - governor turned on. Motherboard: Asus_ROG_STRIX_X399-E_GAMING_TR4 I’ve seen other people having problems getting 204HD to work without xruns with 64 buffer, 3 periods so I guess the motherboard plays a role here. The a-Fluidsynth “CPU Profile” showed the same load regardless if Ardour DSP load was 30% or 5%. I saw this behavior many times (but not always) and it probably indicates something is be wrong with the RT-kernel I used (or my system). The DSP load varied between 25% - 30% when using buffer: 64 periods: 3, However after playing for a while the load sometimes dropped down to 5% - 10% and stayed there. The test was done playing piano on fluidsynth. 64 buffer and 2 periods worked sometimes flawlessly and sometimes threw xruns. Both devices were able to go down to 64 buffer size and 3 periods without xruns (tested for about 1 hour).

This is probably some kind of a bug in the firmware of the device.īehringer UMC204HD and UMC404HD are both capable of a very low latency. Unplugging and plugging the USB cable returned the device to normal operation. One “flaw” that I noticed was that when UMC204HD was connected and I rebooted the computer the device “disappeared” from Linux. Neither device has a power button, so they turn on when you plug power to them. UMC404 is powered by a separate power supply. But considering the low cost of this interface, I would just get a SPDIF or AES EBU box for digital transfers or another UMC404 if I needed to mix & match phantom power inputs.UMC204HD does not have a power supply, it gets its power from USB.

The only cons on this are: no SPDIF, no AES/EBU, and Phantom power is either active on all 4 inputs or off on all 4 inputs, so no mixing and matching condenser & ribbon mics in the same interface. The headphone amp is powerful enough for tracking. The mic preamps sound better than the Focusrite in terms of less noise floor, EMI issues, and just sheer transparency. You load the driver on your computer, plug the UMC404 in, fire up your DAW, and it just works seamlessly & intuitively.

The Behringer UMC404HD is a dream come true. I had a first gen Focusrite 6i6 that was underwhelming with its sound and a bizarre application that you had to use with your DAW that unclear both with it's manual and labeling. Lightweight, transparent sound, great features

Umc 404 hd driver