The Audio Technica AT8538 power module provides several important functions. First, it converts the 11 - 52 VDC phantom power into a smaller DC bias voltage used to power the FET impedance matching circuit inside the microphones listed below. Also, it provides low frequency roll off, supplies battery power if phantom power is not available, converts the signal to the proper impedance and balances the output. The power module is a necessary component when using any of the mics listed below.
Power module only for AT831R, U853R(W), U853R(W)U, U857R(L), U857R(L)U.
Phantom power only in-line power module, with bass roll-off, input on TA3M, output on integral XLRM 3-pin. Furnished with U853R, U857R, PRO35. Shown above with PRO35 (not included).