Mackie Onyx Blackjack is Quality, Quiet, Quick and Quite affordable.

This fits my needs perfectly. i record voice-over narrations from home and on the road. I run an ADK studio condenser mic into my Dell Notebook recording on Adobe Soundbooth, and monitor playback with Sennheiser headphones. The Blackjack interface is the simplest, best quality solution I could find after trying several. It is extremely quiet, my main priority for quality, with awesome preamps and 24bit conversion; it is quick to setup using only a USB connection for both power and signals, and the price is right at under $150. I tried M-Audio Fast Track (too noisy); a separate mixer/USB D/A interface (too many cables, power supplies, etc.). A bonus, because of it's metal, not plastic, case is that it stays put when cables tug on it. It has everything I need or will need in the future. I can even add powered monitors when needed.

It's quiet and accurate

This little unit lives up to all of Mackie's advertizing hype (which turns out not to be hype at all)! With my Mac Mini it was simply a matter of plugging it in, selecting it in the DAW, then fingerpicking the six-string over a background of silky silence and listening to the playback preserved in pristine clarity and accuracy. It puts out exactly what you put in, so ... practice, practice, practice.

Expect a lot--this will deliver

You simply can't go wrong with this interface. I've played woodwinds professionally for over 30 years, and have use quite a bit of professional recording equipment during that time. The sound produced by this interface with a Shure KSM32 mic is natural, fat, and beautiful. Vocals with this combo will amaze you. Use it with Garage Band like I do, or a program of your choice. You will not be disappointed.
Mackie knocked it out of the park with this thing.

Nice n' Easy

This little piece is an exceptionally built and functional interface. All metal solid; and hooked right into my Mac, up and running...no problem. Nice monitoring options so I can leave my preamp plugged in, ready for usb recording to my mac; or if I feel like just jamming through my board and monitors, the "to monitor" level brings the signal right in.

Definitely consider this little piece of recording gear. Price is right and you won't go wrong.

Nice little box!

This thing is pretty great. I have one and have used it several times. The sound quality is pretty decent. I used to own a PreSonus Firestudio which was firewire and I thought going down to a USB device I might have latency issues, but I haven't had any yet. I have also been using a Apogee One, but the One has been making Logic overload... but I haven't had any problems with the Blackjack doing that... but the One does have a slightly noticeable better audio quality which is why I only gave the Blackjack a 4.5... Plus it's cheaper than the One...

Perfect for Radio Production

We picked up a BlackJack for auditioning music, light Pro Tools 9 editing and some festival DJ projects. And what a pleasant surprise it has been to discover such a sweet balance of performance, design and functionality in one low-priced unit. This little guy does a few mission-critical things exceptionally well. Like any USB device, it can occasionally get confused and need a USB reboot (plug & unplug) but we've found that to be the case with Firewire units as well. The the podcaster just starting out or the grizzled pro just yearning for reliable simplicity, the Blackjack is worthy of your consideration.

A great box for a great price

The Mackie Blackjack does exactly what I need, at an affordable price. Plenty of headroom, doesn't take up much space, solid construction. If you're doing small demo work, and don't need more that 2 channels, the blackjack is great.

Mackie Onyx Blackjack

Built really well - not plastic or cheap feeling.
Installed without issue onto my Windows 7 computer
Sound quality is excellent

Summary
Great value / Great Interface

Mackie Onyx Blackjack

A breeze to set-up and use.
For singer songwriter stuff or basic tracking for demos - it's a great fit.
The mic-pre's are "no frills" - but they are transparent....you will get back what you put in for sure..these were the reason I went with his product.
I also own an Onyx 1640-i, but needed a smaller footprint and easier portability for some jobs. Cool product and I do enjoy using it.

Love it!

Turned my laptop into a portable studio. Easy to use with Logic, I was set up and recording in minutes.

Onyx Blackjack 2x2 USB interface ..really stretches an old laptop

Using this USB interface really stretches my 4 yr old Dell Latitude laptop computer. Tech support had me download a latency monitor, which shows that a number of the drivers have too long a latency..so the audio gets pops and clicks and buzzes, showing dropout of the digital signal. My newer Dell XPS8300 computer gives no such problem...works smooth as silk with very low levels of latency. I love the Onyx Blackjack, but am having a challenge cleaning up the drivers on my laptop...which is the computer I need to use the interface with.

Solid Unit, Terrible Driver

This rating would be five stars if the included driver wasn't so bad. It was completely unusable for me, and once it was installed I had a tough time getting the hardware unit to use the working driver I downloaded (ASIO4ALL).

Once I got the driver working I found the unit delivers as promised: excellent sound quality, easy to use, built like a tank, and the Tracktion 3 software is serviceable enough that I was finally able to say goodbye to my ancient copy of Cubase SX1 (goodbye, dongle!).

BEWARE if running Win 7 x64

Would otherwise have been a great rating, as the pres are amazing for this price range, and it's dead easy to use, but it's been out for well over a year and after several broken deadlines from Mackie, there is STILL no Win 7 x64 driver. Will work with ASIO4ALL but there are some conflicts with this solution so it does not work for everyone.

If you're running XP or on a Mac it's a great unit but otherwise this is a dud.