Warm Audio WA12-500 MKII, Microphone preamp, 500 series mic preamp, Input and output transformers from CineMag, 71 db gain with fully discrete signal path, Discrete 6-pin socket with 1731 style opamp, Tone button switches the input impedance from 600 ohm to 150 ohm, thus changing the sound of the mic- and HI-Z inputs, 2 megohm true HI-Z inputs on the front panel - transmits the instrument signal across the entire circuit, including the two CineMag transformers and discrete opamp, Ideal for guitars, bass, keyboards as well as other instruments with a 6.3 mm output jack, 48 V phantom power, An output attenuation control (modelled after the CineMag output transformer), allows the preamplifier and transformers to be driven into saturation, LED meter for gain indication, 20 db pad, Design: 500 module