Ryan,
The RD300 is a wonderful piano - heavy as hell though. I'm sure there's LOTS of RD300 owners out there. I love mine. I also use it as my main controller for all my midi boards and modules.
With respect to the piano voices... a couple of things: Firstly, I've heard better. Heck, I have an E-mu Proteus ($400) that has a much better piano voicing. On the RD300, I find myself using Piano3 (3rd preset) most of the time. In addition, I tend to run the "brightness" slider all the way up.
When I first got the RD300 I ran it through a Peavey KB100 keyboard amp. Keyboard amps have the distinction of having a separate horn tweeter (for high frequency) from the bass/midrange. This brings out more of the brightness, which tends to get lost in live performance when you're playing with a full band (damn those guitar players). The KB100 is not robust enough to handle more than a small venue, so what I have done in the past is run an auxillary output from the back of the amp to a PA system - using my amp as a monitor (facing my ears). A nice luxury if you have it. The sound is much much much better, and you get stereo (by the way, the RD has one of the best on-board chorus processors to date).
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Each amp lends it's own "seasoning" to the sound of your keyboard - you could go directly from your RD300 directly into the PA (as you'll see below), but you should also experiment with an auxilliary send (output generally found in the back of the amp) from an amp to the PA just to see what you like better.
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I have recently purchased my own PA (Yamaha EMX860ST stereo amp with two Yamaha 12SV speakers - about $900 out the door). What a difference!!!!
Bottom line, you'll never be happy with a mono amp. If you're on a budget, try a Roland or Peavey keyboard amp for $100 bucks or so. Then see if you can use your Church PA (I assume you use it at Church??). Also, let someone else play it for you so you can determine the set-up that brings satisfaction to your ear.
Good luck.
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Andrew
[This message has been edited by ski2u2 (edited 07-11-2000).]
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Andrew