I don't think the 540 has any Sweet! or Cool! Voices mike. If the one you're talking about is at a 'local' store, you might want to play it for yourself to see if it does have any Sweet! or Cool! Voices. Also mike, you would be doing yourself a BIG favor by purchasing a PSR 1100 over the PSR 540. It's a few hundred dollars more but well worth it imo. You can get a PSR 1100 at Music123.com for $899. They offer Free shipping and also NO sales tax. But if you're short of dough the PSR 550 would be a good choice. Give George a buzz mike. I'm sure he'll give you a great deal on that brand new PSR 550. He may even carry the PSR 1100.

Best regards,
Mike
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Yamaha Genos, Mackie HR824 MKII Studio Monitors, Mackie 1202 VLZ Pro Mixer (made in USA), Cakewalk Sonar Platinum, Shure SM58 vocal mic.