MOTU M4

Esta placa de som plug and play é reconhecida de imediato pelo computador sem quaisquer complicações para instalar. Boa resistência e de utilização intuitiva, sendo fácil de transportar para usar quem qualquer lado. Os gráficos de Leds na frente permitem-nos controlar o som logo na entrada, antes de sair para um computador, impedindo assim qualquer tipo de distorção numa gravação. O Phatom Power também nos permite utilizar qualquer tipo de microfone. É assim uma placa que nos permite trabalhar sem erros para ligar instrumentos ou microfones a um computador. A melhor escolha dentro da gama.

I'm using this in my home studio setup, connecting two pairs of monitors, headphones and some mics and guitar.
The build quality is great, metal chasis and pots, beautiful LCD display with meters, and rubber bottom pads so it doesn't slip around.

The headphone amp drives my 250 ohm DT990 without a problem. I keep it at about 60-65% while mixing and at about 50% for mastered material and it is loud enough for me, with a lot more gain if you need it.
Sound is crystal clear, which is expected as it has professional converters.
The only thing that bugs me is that there is no volume control for output 3/4, at least no practical and fast way to do it. So switching to my secondary monitors to check the sound is a bit of a hassle.

Pros:
Sturdy build, clean converters, great LCD, two pairs of outputs, good headphone amp.

Cons:
No volume control for output 3/4

The m4 is definitely worth its price.
Build quality is really good, Encoders feel smooth, buttons clicky and responsive.
The connections aren't wiggly and usb c is perfect.
The outputs are solid too especially have 1/4" jacks for both 1&2 and 3&4 outputs.
Inputs are crisp and low latency, good enough for me to play guitar.
The screens are helpful and the headphone jack drives my headphones very well.
The asio is simple to use as well as the loopback feature.
To use this for music production/podcasts is a no brainer this fits the bill across the board.
My only issue is that loopback, line in (3&4) monitoring, volume knob and headphones all only work through 1&2 output channels. If you use your computer for a multitude of tasks, I imagine gaming or DJing would be under it- I like to route my game audio through my speakers and have voice chat through my headphones and would furthermore like to use my headphone output for cueing when Djing. However you can't have the headphones use 3&4 output channels. I have instead been using 3&4 outputs as my main audio from my computer. This basically means I can't use the volume knob which becomes another unneeded issue to make sure all my software is turned down as, again, I can't control the incoming volume on the m4. It would be good is motu allows users to pick which outputs channels are for monitoring and headphones.
All in all this device is still one of the audio interfaces out there at the moment in its price range and would recommend to anyone.

Search on youtube and internet something like "windows drivers problem MOTU". Sound popping, crackling, distorting on playback no matter of buffer size, settings, USB Windows settings in device manager (power options, disabling drivers and kepp ASIO only etc)...

Tried on multiple computers. And this is well known problem. Be aware if you planning to use it on Windows, MOTU drivers are junk.... And you can tell that it is computer or Windows problems - connected another USB to the same computer, same port, same settings - no any issues. No any issues whatever with integrated sound card. With MOTU it's like back to stone age...

Very disappointed, bought because of overhelmed positive reviews (assume most on Mac users). And even if some people do not have problems on their PC on Windows, it is not appropriated that device is working 50/50, like you are gambling...