Buy from Amazon.com : http://fave.co/1FyBnkL <br /><br />Audio Technica AT8538 Power Module<br /><br />Product Description : <br />Power module only for AT831R U853RW U853RWU U857RL U857RLU <br />Phantom power only in-line power module with bass roll-off input on TA3M output on integral <br />XLRM 3-pin
