You will not need an expansion board for the KN7000. From what I've learned, its not an "Oh my God" difference of the expansion board than what you already have. I would'nt let that sway you from the KN7000. However, Technics, as stated, is not producing any more Keyboards.

I own the 7000 and a PA-50. I have demoed the Tyros and the new PSR 3000.

The 7000 gives you more voices (sounds) and styles with better quality. The Tyros did not move me or excite me like the 7000.

Although a different approach to an arranger Keyboard, the PA1X is the only other unit, I feel that offers the sound quality and excitement that the 7000 has.

Just my opinion, a function of this forum.

Thank you,

Mark