Audio interface:
This is the best what u can found for this price.
Professional neutral sound, clear, and with a powerful amp.
But drivers are "meeeeeh", u can change only buffer size and rate, this is not bad...but too simple, and for 90 euro u are waiting for something more.
Microphone:
...well, he is not bad...and not good...this is just a classic cheap XLR mic. Nothing bad, but if u can use something better...use.
Headphones:
I never used monitor headphones before...and goddammit I made a big mistake, now I hear everything. Awesome!
Result:
If u use a USB mic, buy this pack and u can make really better sound. But if u already use xlr mic and audio interface...I'm not sure this has sense.