Lindell Audio 6X-500 Microphone Preamplifer / Pultec-Style EQ (500 Series Module)The 6X 500 from Lindell Audio is a single channel microphone preamp mated with a two channel Pultec style EQ, and housed in a 500 series enclosure. It features an all discrete design based upon the 990 amplifier. The preamp delivers up to 65 dB of gain and has switchable 48V phantom power and a polarity switch. The EQ features low and high frequency boost with up to 15 dB of boost in the high end. The 6X 500 fits in all 500 series compatible power