TC Electronic Gold Channel Stereo Mic Pre w/ 24-bit A/D Converters and DSP Tool; Fully tested and working great, see photo for scratch on the top (that will not be visible if used in a rack). Includes AC power cord.   Will be packed very carefully 

The Gold Channel is a microphone preamplifier and A/D converter that offers all kinds of programmable DSP - dynamics (compression, expansion et al), multi-band EQ et al.  Unlike any other preamplifier, the Gold Channel offers a wealth of DSP Tools giving you unprecedented features and sound quality.

The Gold Channel is a digitally enhanced microphone preamplifier and a signal refinement toolbox. Plug in your microphone, connect the Gold Channel's outputs to any analog or digital recorder, and safely capture your signal in the best audio quality audio possible. Right after the Gain stage of the Gold Channel, the signal will be converted from analog to digital through 24 bit A/D converters.