Don't Buy a Keyboard Amp!
I am a keyboardist with a five piece original rock band. Starting to tour now, I needed more stage power on our backline to keep up with the guitar and bass player - they both have dual cabinets and were blowing me away. So I was looking at the keyboard amp options. These amps are very expensive relative to the power/performance you get out of them. $1000 for 350 watts just did not impress me, and even with two of them, I would not be able to keep up with the guitar and bass. So I did a lot of research, talked with my sales engineer (JR Dahman), who worked with me on my application, as I do not want a PA system. I made my decision and purchased one JBLPRX612M. Since I have more than one keyboard, and the PRX612's only have one input, I also purchased a Yamaha 8 channel mixer with effects. So with only one PRX612M, I drvie the output of the mixer (any mixer will do, but I like the compact little Yamaha unit - you can't get a better deal on a high quality small mixer with FX) with only one of the stereo outputs on the mixer, and pan everything hard left for the left mixer output. What I get is an enormous amount of clean sound that is as good if not better than any keyboard amp I have ever had or tested. Absolutely clean power on the high and low ends. I keep the output of the PRX612M at the 12 o'clock position, just under the threshold of the clipping LED on the back of the speaker. If you use these speakers for your rig, it is of utmost importance to set all your levels so everything is just under clipping point - keyboards nearly full up, mixer just at 50% output, JBL at 12 o'clock. And Voila! Have the best keyboard amplifier that I've ever had. No distortion at all, very clean and powerful lows, mids and highs. Very, very loud (watch your ears if you have these on your backline, as they could do serious damage to your hearing if you drive them too loud.
I can now keep up with the guitar freaks, in fact, I have to back off on my volume pedals so I don't overpower them! Nice problem to have, for sure.
Next move, I plan to add a second PRX612 for full stereo out of the boards, and split the two speakers so the drummer and bass player can hear me without running them too loud.
Bottom line, these very high high quality performers have now made keyboard amps obsolete in my mind, and they are smaller and lighter than any of them. Also, I got a very good deal from Sweetwater that blew everybody else's price away, no tax, no shipping, and you get the Sweetwater 2 year warranty which includes personal tech support. Sweetwater stands behind their products, and your personal sales engineer will patiently work with you on all your technical and applicaton issues. Thanks, Sweetwater and JR Dahman, you guys have changed my world!