Diosif,
maybe you could use a volume pedal and gradually decrease the overall volume while you play (kind of "fade-out-do-it-yourself")
Better than nothing...
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Korg Kronos 61 and PA3X-Pro76, Roland G-70, BK7-m and Integra 7, Casio PX-5S, Fender Stratocaster with Fralin pickups, Fender Stratocaster with Kinman pickups, vintage Gibson SG standard.