Actually, Yamaha's first auto accompaniment portable, called the Portasound was in 1980 with the PS1/2/3.

Their first really legit models, IMO, were the PS-55/35 which had PCM drums, but used P.A.S.S (pulse analog synthesis system)for the sounds.

These were followed by the FM based PS-6100(1984), PSR-70(1985) and the PSR-6300(1986).

The next bunch were based on an early form of sampling(before AWM) called D.A.S.S.(Dual Architectural Synthesis System) and the top models were the PSR-4500/4600.

The AWM stuff came later, with the launch of the PSR-6700 and PSR-500 in 1991.

I had just started working for Yamaha way back then, and remember demoing(and owning) these instruments.


Ian

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Cha d’dhùin doras nach d’fhosgail doras.