It is a newer updated model although I don't really care because I don't sing
It does sound better.
I don't sing much either, Frans, but I use the Tyros4's vocal input for running other keyboards through...in my case a Yamaha CS-01 mono synth.
I use the harmony to make the
mono synth sound like a
polyphonic, plus effects etc.
The Korg could work the same way.
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.