Feature:
Pro ins and outs work for any application. Very lightweight considering the amount of current this thing delivers! Front and Back rack-mounts for stability and reliable mounting. Precision detents aid accurate adjustment. Forced air cooling is a trifle loud for studio use.

Quality:
Its QSC. You've heard about QSC, right? We have NEVER had anything by QSC fail... in 30 years; Even under extreme conditions, ...Not even once.

Value:
Three bills buys this world-class audio master. That's cheap for QSC quality.

Desirability:
Looks good. Sounds great. It's all pro and good to go.

Sound:
Ruler flat response. Great dynamic range. Boatloads of juice. We've used it for critical monitoring where its clear coherent uncolored fidelity shines. I've used it for bass guitar and keyboard where the high-power and wide frequency range shows its muscle.

Ease of Use:
Plug it in. Hook it up. Turn it on.

Support:
I have never had to call for repair, but I have called for technical advice. The staff was responsive and knowledgeable.

Overall:
After hearing this amp with several systems, I decided to mount it in a small portable rack back with a power-supply. I use it for everything: keyboard, PA, guitar rig, bass rig. It works for every live-gig I get. I change speakers, loads, inputs, ohmage, ...everything. The QSC GX3 keeps pumpin 'n' thumpin, loud and clear.

Feature:
The biggest problem with this amp for everyone else is going to be the silly left to right air flow. For me it is that the fan in the GX3 is really unacceptably loud for home use. According to QSC tech support, the fan is temperature controlled, but it idles like an outboard motor. A decent PWM fan could have covered the range of cfm necessary at different drive levels. In retrospect, I regret this purchase.

Quality:
Built like a tank

Sound:
I bought a GX3 to power some high end home speakers with horrendously low sensitivity. I have owned several audiophile amps and like the fact that $300 can buy so much clean power.

Feature:
lots of input and output selections, nice! And the fan makes very LITTLE noise, dont know what others are talking about. This is in a small studio, fans are bad, this amp is no problem!!!

Quality:
Seems built like a tank, will let you know later with more time on it

Value:
oh ya, very happy with choice

Sound:
Fantastic reproduction, low noise. Replaced a real workhorse amp and if I had realized the sound difference I would have replaced it sooner

Ease of Use:
plugged it in, rocked out

Overall:
I am good with this amp till it dies or I do.

Feature:
Well I di like how they used speakons.

Quality:
Heavy and made out of steal. Pretty normal.

Value:
Great price for the amount of power this thing is pumping out.

Sound:
I owned a Samson, and the sound was pretty good, but this is by far much much better!

Ease of Use:
It's an amp.

Support:
Don't need it, though I do like how they include a 6 year warranty.

Overall:
Just buy it.