Thank you for the feedback on my review. My hope is that it is helpful for anyone considering the WK-7500.

I am going to post a follow-up soon, now that I've played with the thing a bit more.

But to Impuls let me say this: Yes, of course I can!! ...compare the PSR540 to the WK7500

While the WK-7500 is currently near the top of the consumer line for Casio, I would never consider the PSR-540 a low class keyboard. It wasn't the top-of-the-line Yamaha workstation when I bought it, but it was very much on par with high-end models from Casio at the time, and it certainly has held up very well over the years.

The two share quite a few features, among them:

- Extensive sound bank (10 years later - some sounds more realistic - perhaps)
- onboard speakers
- Auto-accompanyment (10 years later - more "modern" beats, less traditional)
- 16-track sequencer
- Split and layer
- ability to create your own rhythms
- external storage (10 years later we have SD card rather than floppy)
- registration memory
- Chorus, DSP, Reverb effects
- Fast/slow DSP switch (e.g. for rotating speaker)

There are probably other similarities I am missing. But the bigger question is: why not compare? Sure, time will allow probably a lower price for similar features, but if someone owns a consumer keyboard (like I did with the Yamaha) that did its job well, then why shouldn't it be the basis against which I evaluate newer keyboards that are being offered? I'd be crazy if I didn't.

Whenever I was in a music store, I would make a point of checking out keyboards, with the thought of perhaps replacing the Yamaha if something really grabbed my attention. Up until the WK-7500, nothing really did. And there are still things that the Yamaha does much better than the Casio, even for what someone might call a "low class keyboard" (e.g. MIDI ports, direct button access, syncro start/stop, multi-pad, numeric keypad, simultaneous DSP/Chorus/Reverb). So IMO, the PSR540, even for its age, stacks up very well to the WK-7500. Honestly - as I was making the decision to get the Casio, I kept thinking of all the things that the Yamaha did better - wishing that the Casio had them. In my mind, features should be added, not phased out or replaced. Of course these are two different companies. If Yamaha made a consumer keyboard with organ drawbars, I probably would have gotten it instead.

So what was it that tipped the scales for getting the Casio?

- Organ drawbars and control buttons
- Piano-style keys
- 76 keys
- More sequencer storage room on a more modern media
- Stereo/Mono output (rather than just a headphone jack for PA output)
- Great piano sounds
- Internal sounds editable to a degree
- Internal effects editable
- Mic and instrument inputs
- Price + Good deal on eBay

I probably wouldn't have bought it if I didn't get that great price from eBay.

I will follow up with more thoughts on the WK-7500 now that I've fooled with it a couple weeks.

-Tom