The most reliable way to compare the G70 with the Tyros George is of course to run both keyboards through the same sound system. And the sound system (speakers, PA, etc.), should be high end ones, as they tend to more accurately re-produce the true sound of an instrument.
As always, we look forward to your intricate and detailed evaluations.
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.