Price history on Walmart.com for
SP-8538 - Phantom Power Adapter For Balanced Electret Condenser Microphones.
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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.
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