Good news about your success with the phantom power in the 2X. I also have a Beta 87A I'll use in my studio with the 2X - what a machine Time to get some demos done now.
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Yamaha 920 / Yamaha DGX-670 / Maui 5 Go (2) / Senn e935 / Sony C80 / Tascam DP24sd / ATEM Mini Pro switcher (studio)