I've been using one of these babies for 3 years now. For a portable audio interface, it really can't be beat. Solid as a rock. Never had a single issue with it. It's the perfect travelling companion for a LapTop. I use mine with Reason 6 and the two combined make for one hell of a portable studio.

Mine came with a copy of the Studio One DAW. Nice little recording suite to be bundled with the Firestudio Mobile.

If you have limited space, a limited budget, or need a solid & dependable portable audio interface, look no further.

My Echo Audiofires are great for recording but are terrible for latency performance when playing software instruments with my MIDI keyboard and drum pad controllers. There's a noticeable delay that greatly affects feel and timing in a bad way, and ruins the fun of music.

The Presonus Firestudio Mobile runs solidly at the second-lowest buffer setting on my PC (64 buffer). Now playing software instruments is a joy, just the same as any of my hardware in response time. I switch the driver in Cubase to go between multitrack mode (Echo) and playing mode (Presonus), couldn't be simpler. My massive library of samples has a new life.

I can't comment much on the sound quality because I'm using it only as a low latency interface, using SPDIF output to my Emotiva DC-1 DAC. The Emotiva does sound noticeably better and is my standard DAC. But I will emphasize once more that the Presonus Universal Control 1.7.1 software is solid "as a rock" at low latency, under 4 ms in my case with Cubase 5. The Echo couldn't hardly touch 10 or 12 ms, at much higher buffer settings, which is significantly worse in reality. The Emotiva DC-1 was getting a medium low latency as an interface, but not as low as the Firestudio Mobile!! It really makes a difference! There's this black art of latency that you have to learn the hard way. It took me a year to find out that my interfaces were the problem, and that Presonus had the solution.

I had trouble with the 1.7.2 software, but 1.7.1 is working pretty cheerfully. Actually there are some minor bugs to work around in the Presonus software, it's not as clean and foolproof as the Echo, but they don't get in the way for my basic use. Once you've got your settings where you want them, it's pretty straightforward in use. The GUI is not as pretty as Echo either, but it's not bad.

What a great deal in audio gear. I paid $99 used for mine (plus tax and shipping). This was a real problem solver for me. Until I can afford a truly high end all-around conversion rig like RME, UA, etc.

I really think that this is a hidden gem of an interface given its latency performance and price. It deserves a little more press, I think.