Scott,
yes, I went already through all these steps, but still there is a difference in input sensitivity between front and rear inputs ; I will check again all the possible input gain regulations in my PC.
Thank you anyway
Andrea
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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.