Good monitors are a revelation for some people...they do make a big difference.
Trick is to get a set that doesn't "color" the sound.
I use powered Yamaha MS60S monitors, and I also use a pair of unpowered B&W DM110 with a Radio Shack STA100 power amp.
These units are perfect for my needs.
Congrats on your new speakers.
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.