Feature:
This thing does it all. As soon as it was hooked up it did everything guitarwise that it says. The interface in Gearbox is very easy to use. You need to create your own user sounds if you want to access them because you can only change tone by clicking with the mouse or scrolling with a pedal or on the KB37 to the next tone. No big deal. I wish the assignable buttons could jump directly to the patch that I assign it. Maybe next time.

Quality:
Plastic case and keys are a little cheesy but it just sits on my desk so that is no big deal.

Value:
Other interfaces may cost the same and include far fewer features. You can by a POD for the same price. One guy I know bought a digital recording system for $800. He was certainly pissed when I told him that I paid $200 for my toneport which does the same stuff.

Desirability:
Maybe I don't get this question but I wanted it enough to buy it!

Sound:
Tone Direct really works. No latency, even on a crappy laptop. Amp models and effects are sooooo good and infinitely tweakable. I don't have any add-on packs but you could add more tones. I use my amp as a monitor and it sounds better than anything I have ever used. MIDI keyboard is as good as what ever soundcard or plugins you have.

Ease of Use:
Every patch is awesome and if you don't like it, make your own tone. Just install it plug it in and go.

Support:
Support only available in a discussion board. No phone support but my question was answered so it worked for me.

Overall:
This will do fine for what I need it for. I use Garageband to record and now I have some really awesome guitar sounds. The keyboard is handy but the only reason I am not giving 10 is that I expected the KB37 to have at least a few keyboard tones in gearbox. Strictly a controller and no real advantage over the ux2. I already have another keyboard so I probably could have gone with the ux2.

Feature:
Nice midi controller, awesome package all together.

Quality:
I don't much like the fact that it is plastic (I am accident prone), but it has held up so far and I have had it for about a year with no problems at all.

Value:
Well worth $ spent.

Desirability:
Looks great to me, I love red and black.

Sound:
Loads of sound, especially equipped with Gearbox. I don't use any other processors or effects while recording, and get amazing tones and sound.

Ease of Use:
I never recorded by myself until I bought this. In a week I was throwin down tracks left and right!

Support:
I haven't had to call about anything, the manual and FAQ's took care of me.

Overall:
Great product, I have recommended it to many friends and will continue to do so.

Feature:
By far the best Keyboard/Audio Interface I've experienced. The Sequencer and Guitar Amps & Effects that comes pre-packages are top-notch. Lacing Keyboard and Guitar ideas are no longer a problem.

Quality:
Although plastic, the knobs are sturdy and the rubber pads are intact.

Value:
Everything packaged to get a song recorded in minutes comes with it. With Line6, you always get what you pay for.

Desirability:
A must-have for Guitarist.

Sound:
Crystal clear and Digital. Lovely touch for a Home Studio.

Ease of Use:
Syncing Gearbox, Ableton, and my foot switches all together was quick & easy. Everything is already pre-mapped.

Support:
Haven't used it, but the Help and FAQ's are accurate.

Feature:
GearBox is the software that controls everything on KB37. For example, wich input device will be used, which preamp etc. The software satisfy, very well, my needs.

Quality:
100% plastic. For my usage, on my home studio table, it´s perfect. Lightweight too. On the road usage I would use a hard case.

Value:
MIDI Controller Keyboard, 2 phantom power mics in, 1 P10 guitar/bass in etc etc. You can record everything here, for a low cost. Great value.

Desirability:
Very attractive device.

Sound:
GearBox (software that comes with KB37) comes with MAC and Windows versions. I use a Mini Mac. Sound is crystal and clean. Recorded guitar/acoustic guitar and vocals For vocals I use a Behringer B2 Pro mic condenser (phantom) in one of the two mic ins of the KB37. Sounds great! Noiseless. Perfect.

Ease of Use:
Just install GearBox and plug USB cable. I use Garaband for recording but I´ll upgrade for some professional software in the future.

Support:
The best, never talked to them.

Overall:
The big advantage of KB37 in my opinion is the MIDI controller (keyboard). I don´t play keyboard but I can make my drums and percussion very well on it. Also some organ chords... I highly recommend this unit. Very stable (on MAC), noiseless, NO LATENCY, power supplied by the same USB cable you use for data transfer, etc etc... If you want an audio interface and will need a MIDI controller, buy it.

Feature:
The compact three-octave keyboard is not bad for the price and the knobs and buttons are easy to use and feel like they will last a while. One area where it falls down is that it will only transmit MIDI on Channel 1. For me this meant a lot of re-jigging but now that I have set everything up I am happy it was worth the hassle. Hopefully a future software update might allow us to choose a MIDI channel.

Quality:
The thing seems solidly built and I anticipate many years of good, reliable service.

Value:
For the money I paid I am very happy with what the KB37 brings to the table.

Desirability:
Like most Line 6 products, the KB37 has a very unusual, appealing design. The car-like paint finish to the body is very slick and the whole thing looks amazing. TBH, it was a big part of the appeal for me - to have it sitting on my keyboard stand on stage.

Sound:
The included GearBox software is incredible. It contains all manner of amp and speaker models, as well as stomp-box effects and even vocal pre-amps. On top of that you can buy extra model packs at a reasonable price but most things are covered in the basic package.

Ease of Use:
Everything is fairly straightforward and the manuals are well written and amply illustrated.

Support:
Line 6 tend to leave support to their users, by encouraging people to help out on their forum, using points and prizes as incentive. This is fine for basic things but when I had a serious problem, tech support was absurdly slow to respond and before they had done anything for me I had completely rebuilt my PC and the problem just went away. It took almost 6 weeks to get anything back from them, which is completely unacceptable in my book.

Overall:
I have had several USB I/O devices and/or controller keyboard in the past few years but I think this is the device that I have needed all along. I can envisage being happy with it for many years.

Feature:
Not many features. For the Line-In's, you have to activate them through Gearbox instead of switching the External In's in the Sequencer. Big minus.

Quality:
Hard and sturdy. Knobs are nice, but the Pads aren't really assignable to anything. Keys are velocity sensitive which is great.

Value:
Buying an all-in-one Audio Interface isn't the wisest move. Gearbox is what brings it down.

Sound:
Bad. Gearbox isn't up to par.

Ease of Use:
Had a hard time getting rid of recording latency. The verdict....Gearbox.

Support:
The best.

Overall:
Since I already shelled out quite a bit for it, I'm working with it. It's not bad, just Gearbox brings it down.