"box": simply the case where everything is in. the plastic/metal body of the instrument.

if i had more money:
1. tyros2
2. ketron
3. g70/pa1x

because i have not:
1. e60
2. psr3000
3. pa50 - i owned one last year.

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Yamaha S770, Studio One 3, EMU 0404USB, ESI, ATH, Dell. And others.